From 73f6cce936130abde06ec3a39d0a4cdabfef01e4 Mon Sep 17 00:00:00 2001 From: Pierre-Anthony Lemieux Date: Sun, 26 Dec 2021 16:47:57 -0800 Subject: [PATCH] avformat/imf: Demuxer Signed-off-by: Pierre-Anthony Lemieux Signed-off-by: Zane van Iperen --- configure | 3 +- doc/demuxers.texi | 6 + libavformat/Makefile | 1 + libavformat/allformats.c | 1 + libavformat/imf.h | 207 +++++++++ libavformat/imf_cpl.c | 841 ++++++++++++++++++++++++++++++++++++ libavformat/imfdec.c | 899 +++++++++++++++++++++++++++++++++++++++ libavformat/version.h | 2 +- 8 files changed, 1958 insertions(+), 2 deletions(-) create mode 100644 libavformat/imf.h create mode 100644 libavformat/imf_cpl.c create mode 100644 libavformat/imfdec.c diff --git a/configure b/configure index 23ef2abc9b..07fb7925d8 100755 --- a/configure +++ b/configure @@ -298,7 +298,7 @@ External library support: --enable-libxvid enable Xvid encoding via xvidcore, native MPEG-4/Xvid encoder exists [no] --enable-libxml2 enable XML parsing using the C library libxml2, needed - for dash demuxing support [no] + for dash and imf demuxing support [no] --enable-libzimg enable z.lib, needed for zscale filter [no] --enable-libzmq enable message passing via libzmq [no] --enable-libzvbi enable teletext support via libzvbi [no] @@ -3415,6 +3415,7 @@ hls_muxer_select="mpegts_muxer" hls_muxer_suggest="gcrypt openssl" image2_alias_pix_demuxer_select="image2_demuxer" image2_brender_pix_demuxer_select="image2_demuxer" +imf_demuxer_deps="libxml2" ipod_muxer_select="mov_muxer" ismv_muxer_select="mov_muxer" ivf_muxer_select="av1_metadata_bsf vp9_superframe_bsf" diff --git a/doc/demuxers.texi b/doc/demuxers.texi index 593ff34c86..b474a24278 100644 --- a/doc/demuxers.texi +++ b/doc/demuxers.texi @@ -274,6 +274,12 @@ which streams to actually receive. Each stream mirrors the @code{id} and @code{bandwidth} properties from the @code{} as metadata keys named "id" and "variant_bitrate" respectively. +@section imf + +Interoperable Master Format demuxer. + +This demuxer presents audio and video streams found in an IMF Composition. + @section flv, live_flv, kux Adobe Flash Video Format demuxer. diff --git a/libavformat/Makefile b/libavformat/Makefile index 65fb789aa3..74b1c56351 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -286,6 +286,7 @@ OBJS-$(CONFIG_IMAGE_WEBP_PIPE_DEMUXER) += img2dec.o img2.o OBJS-$(CONFIG_IMAGE_XBM_PIPE_DEMUXER) += img2dec.o img2.o OBJS-$(CONFIG_IMAGE_XPM_PIPE_DEMUXER) += img2dec.o img2.o OBJS-$(CONFIG_IMAGE_XWD_PIPE_DEMUXER) += img2dec.o img2.o +OBJS-$(CONFIG_IMF_DEMUXER) += imfdec.o imf_cpl.o OBJS-$(CONFIG_INGENIENT_DEMUXER) += ingenientdec.o rawdec.o OBJS-$(CONFIG_IPMOVIE_DEMUXER) += ipmovie.o OBJS-$(CONFIG_IPU_DEMUXER) += ipudec.o rawdec.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index a100639773..d066a7745b 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -213,6 +213,7 @@ extern const AVInputFormat ff_image2pipe_demuxer; extern const AVOutputFormat ff_image2pipe_muxer; extern const AVInputFormat ff_image2_alias_pix_demuxer; extern const AVInputFormat ff_image2_brender_pix_demuxer; +extern const AVInputFormat ff_imf_demuxer; extern const AVInputFormat ff_ingenient_demuxer; extern const AVInputFormat ff_ipmovie_demuxer; extern const AVOutputFormat ff_ipod_muxer; diff --git a/libavformat/imf.h b/libavformat/imf.h new file mode 100644 index 0000000000..62c4468ce9 --- /dev/null +++ b/libavformat/imf.h @@ -0,0 +1,207 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * + * Copyright (c) Sandflow Consulting LLC + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * Public header file for the processing of Interoperable Master Format (IMF) + * packages. + * + * @author Pierre-Anthony Lemieux + * @author Valentin Noel + * @file + * @ingroup lavu_imf + */ + +#ifndef AVFORMAT_IMF_H +#define AVFORMAT_IMF_H + +#include "avformat.h" +#include "libavformat/avio.h" +#include "libavutil/rational.h" +#include + +#define FF_IMF_UUID_FORMAT \ + "urn:uuid:%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-" \ + "%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx" + +/** + * UUID as defined in IETF RFC 422 + */ +typedef uint8_t FFIMFUUID[16]; + +/** + * IMF Composition Playlist Base Resource + */ +typedef struct FFIMFBaseResource { + AVRational edit_rate; /**< BaseResourceType/EditRate */ + uint32_t entry_point; /**< BaseResourceType/EntryPoint */ + uint32_t duration; /**< BaseResourceType/Duration */ + uint32_t repeat_count; /**< BaseResourceType/RepeatCount */ +} FFIMFBaseResource; + +/** + * IMF Composition Playlist Track File Resource + */ +typedef struct FFIMFTrackFileResource { + FFIMFBaseResource base; + FFIMFUUID track_file_uuid; /**< TrackFileResourceType/TrackFileId */ +} FFIMFTrackFileResource; + +/** + * IMF Marker + */ +typedef struct FFIMFMarker { + xmlChar *label_utf8; /**< Marker/Label */ + xmlChar *scope_utf8; /**< Marker/Label/\@scope */ + uint32_t offset; /**< Marker/Offset */ +} FFIMFMarker; + +/** + * IMF Composition Playlist Marker Resource + */ +typedef struct FFIMFMarkerResource { + FFIMFBaseResource base; + uint32_t marker_count; /**< Number of Marker elements */ + FFIMFMarker *markers; /**< Marker elements */ +} FFIMFMarkerResource; + +/** + * IMF Composition Playlist Virtual Track + */ +typedef struct FFIMFBaseVirtualTrack { + FFIMFUUID id_uuid; /**< TrackId associated with the Virtual Track */ +} FFIMFBaseVirtualTrack; + +/** + * IMF Composition Playlist Virtual Track that consists of Track File Resources + */ +typedef struct FFIMFTrackFileVirtualTrack { + FFIMFBaseVirtualTrack base; + uint32_t resource_count; /**< Number of Resource elements present in the Virtual Track */ + FFIMFTrackFileResource *resources; /**< Resource elements of the Virtual Track */ + unsigned int resources_alloc_sz; /**< Size of the resources buffer */ +} FFIMFTrackFileVirtualTrack; + +/** + * IMF Composition Playlist Virtual Track that consists of Marker Resources + */ +typedef struct FFIMFMarkerVirtualTrack { + FFIMFBaseVirtualTrack base; + uint32_t resource_count; /**< Number of Resource elements present in the Virtual Track */ + FFIMFMarkerResource *resources; /**< Resource elements of the Virtual Track */ +} FFIMFMarkerVirtualTrack; + +/** + * IMF Composition Playlist + */ +typedef struct FFIMFCPL { + FFIMFUUID id_uuid; /**< CompositionPlaylist/Id element */ + xmlChar *content_title_utf8; /**< CompositionPlaylist/ContentTitle element */ + AVRational edit_rate; /**< CompositionPlaylist/EditRate element */ + FFIMFMarkerVirtualTrack *main_markers_track; /**< Main Marker Virtual Track */ + FFIMFTrackFileVirtualTrack *main_image_2d_track; /**< Main Image Virtual Track */ + uint32_t main_audio_track_count; /**< Number of Main Audio Virtual Tracks */ + FFIMFTrackFileVirtualTrack *main_audio_tracks; /**< Main Audio Virtual Tracks */ +} FFIMFCPL; + +/** + * Parse an IMF CompositionPlaylist element into the FFIMFCPL data structure. + * @param[in] doc An XML document from which the CPL is read. + * @param[out] cpl Pointer to a memory area (allocated by the client), where the + * function writes a pointer to the newly constructed FFIMFCPL structure (or + * NULL if the CPL could not be parsed). The client is responsible for freeing + * the FFIMFCPL structure using ff_imf_cpl_free(). + * @return A non-zero value in case of an error. + */ +int ff_imf_parse_cpl_from_xml_dom(xmlDocPtr doc, FFIMFCPL **cpl); + +/** + * Parse an IMF Composition Playlist document into the FFIMFCPL data structure. + * @param[in] in The context from which the CPL is read. + * @param[out] cpl Pointer to a memory area (allocated by the client), where the + * function writes a pointer to the newly constructed FFIMFCPL structure (or + * NULL if the CPL could not be parsed). The client is responsible for freeing + * the FFIMFCPL structure using ff_imf_cpl_free(). + * @return A non-zero value in case of an error. + */ +int ff_imf_parse_cpl(AVIOContext *in, FFIMFCPL **cpl); + +/** + * Allocates and initializes an FFIMFCPL data structure. + * @return A pointer to the newly constructed FFIMFCPL structure (or NULL if the + * structure could not be constructed). The client is responsible for freeing + * the FFIMFCPL structure using ff_imf_cpl_free(). + */ +FFIMFCPL *ff_imf_cpl_alloc(void); + +/** + * Deletes an FFIMFCPL data structure previously instantiated with ff_imf_cpl_alloc(). + * @param[in] cpl The FFIMFCPL structure to delete. + */ +void ff_imf_cpl_free(FFIMFCPL *cpl); + +/** + * Reads an unsigned 32-bit integer from an XML element + * @return 0 on success, < 0 AVERROR code on error. + */ +int ff_imf_xml_read_uint32(xmlNodePtr element, uint32_t *number); + +/** + * Reads an AVRational from an XML element + * @return 0 on success, < 0 AVERROR code on error. + */ +int ff_imf_xml_read_rational(xmlNodePtr element, AVRational *rational); + +/** + * Reads a UUID from an XML element + * @return 0 on success, < 0 AVERROR code on error. + */ +int ff_imf_xml_read_uuid(xmlNodePtr element, uint8_t uuid[16]); + +/** + * Returns the first child element with the specified local name + * @return A pointer to the child element, or NULL if no such child element exists. + */ +xmlNodePtr ff_imf_xml_get_child_element_by_name(xmlNodePtr parent, const char *name_utf8); + +#endif diff --git a/libavformat/imf_cpl.c b/libavformat/imf_cpl.c new file mode 100644 index 0000000000..7055b49ae8 --- /dev/null +++ b/libavformat/imf_cpl.c @@ -0,0 +1,841 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * + * Copyright (c) Sandflow Consulting LLC + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * Implements IMP CPL processing + * + * @author Pierre-Anthony Lemieux + * @file + * @ingroup lavu_imf + */ + +#include "imf.h" +#include "libavformat/mxf.h" +#include "libavutil/bprint.h" +#include "libavutil/error.h" +#include + +xmlNodePtr ff_imf_xml_get_child_element_by_name(xmlNodePtr parent, const char *name_utf8) +{ + xmlNodePtr cur_element; + + cur_element = xmlFirstElementChild(parent); + while (cur_element) { + if (xmlStrcmp(cur_element->name, name_utf8) == 0) + return cur_element; + + cur_element = xmlNextElementSibling(cur_element); + } + return NULL; +} + +int ff_imf_xml_read_uuid(xmlNodePtr element, uint8_t uuid[16]) +{ + xmlChar *element_text = NULL; + int scanf_ret; + int ret = 0; + + element_text = xmlNodeListGetString(element->doc, element->xmlChildrenNode, 1); + scanf_ret = sscanf(element_text, + FF_IMF_UUID_FORMAT, + &uuid[0], + &uuid[1], + &uuid[2], + &uuid[3], + &uuid[4], + &uuid[5], + &uuid[6], + &uuid[7], + &uuid[8], + &uuid[9], + &uuid[10], + &uuid[11], + &uuid[12], + &uuid[13], + &uuid[14], + &uuid[15]); + if (scanf_ret != 16) { + av_log(NULL, AV_LOG_ERROR, "Invalid UUID\n"); + ret = AVERROR_INVALIDDATA; + } + xmlFree(element_text); + + return ret; +} + +int ff_imf_xml_read_rational(xmlNodePtr element, AVRational *rational) +{ + xmlChar *element_text = NULL; + int ret = 0; + + element_text = xmlNodeListGetString(element->doc, element->xmlChildrenNode, 1); + if (sscanf(element_text, "%i %i", &rational->num, &rational->den) != 2) { + av_log(NULL, AV_LOG_ERROR, "Invalid rational number\n"); + ret = AVERROR_INVALIDDATA; + } + xmlFree(element_text); + + return ret; +} + +int ff_imf_xml_read_uint32(xmlNodePtr element, uint32_t *number) +{ + xmlChar *element_text = NULL; + int ret = 0; + + element_text = xmlNodeListGetString(element->doc, element->xmlChildrenNode, 1); + if (sscanf(element_text, "%" PRIu32, number) != 1) { + av_log(NULL, AV_LOG_ERROR, "Invalid unsigned 32-bit integer"); + ret = AVERROR_INVALIDDATA; + } + xmlFree(element_text); + + return ret; +} + +static void imf_base_virtual_track_init(FFIMFBaseVirtualTrack *track) +{ + memset(track->id_uuid, 0, sizeof(track->id_uuid)); +} + +static void imf_marker_virtual_track_init(FFIMFMarkerVirtualTrack *track) +{ + imf_base_virtual_track_init((FFIMFBaseVirtualTrack *)track); + track->resource_count = 0; + track->resources = NULL; +} + +static void imf_trackfile_virtual_track_init(FFIMFTrackFileVirtualTrack *track) +{ + imf_base_virtual_track_init((FFIMFBaseVirtualTrack *)track); + track->resource_count = 0; + track->resources_alloc_sz = 0; + track->resources = NULL; +} + +static void imf_base_resource_init(FFIMFBaseResource *rsrc) +{ + rsrc->duration = 0; + rsrc->edit_rate = av_make_q(0, 1); + rsrc->entry_point = 0; + rsrc->repeat_count = 1; +} + +static void imf_marker_resource_init(FFIMFMarkerResource *rsrc) +{ + imf_base_resource_init((FFIMFBaseResource *)rsrc); + rsrc->marker_count = 0; + rsrc->markers = NULL; +} + +static void imf_marker_init(FFIMFMarker *marker) +{ + marker->label_utf8 = NULL; + marker->offset = 0; + marker->scope_utf8 = NULL; +} + +static void imf_trackfile_resource_init(FFIMFTrackFileResource *rsrc) +{ + imf_base_resource_init((FFIMFBaseResource *)rsrc); + memset(rsrc->track_file_uuid, 0, sizeof(rsrc->track_file_uuid)); +} + +static int fill_content_title(xmlNodePtr cpl_element, FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + + if (!(element = ff_imf_xml_get_child_element_by_name(cpl_element, "ContentTitle"))) { + av_log(NULL, AV_LOG_ERROR, "ContentTitle element not found in the IMF CPL\n"); + return AVERROR_INVALIDDATA; + } + cpl->content_title_utf8 = xmlNodeListGetString(cpl_element->doc, + element->xmlChildrenNode, + 1); + + return 0; +} + +static int fill_edit_rate(xmlNodePtr cpl_element, FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + + if (!(element = ff_imf_xml_get_child_element_by_name(cpl_element, "EditRate"))) { + av_log(NULL, AV_LOG_ERROR, "EditRate element not found in the IMF CPL\n"); + return AVERROR_INVALIDDATA; + } + + return ff_imf_xml_read_rational(element, &cpl->edit_rate); +} + +static int fill_id(xmlNodePtr cpl_element, FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + + if (!(element = ff_imf_xml_get_child_element_by_name(cpl_element, "Id"))) { + av_log(NULL, AV_LOG_ERROR, "Id element not found in the IMF CPL\n"); + return AVERROR_INVALIDDATA; + } + + return ff_imf_xml_read_uuid(element, cpl->id_uuid); +} + +static int fill_marker(xmlNodePtr marker_elem, FFIMFMarker *marker) +{ + xmlNodePtr element = NULL; + int ret = 0; + + /* read Offset */ + if (!(element = ff_imf_xml_get_child_element_by_name(marker_elem, "Offset"))) { + av_log(NULL, AV_LOG_ERROR, "Offset element not found in a Marker\n"); + return AVERROR_INVALIDDATA; + } + if ((ret = ff_imf_xml_read_uint32(element, &marker->offset))) + return ret; + + /* read Label and Scope */ + if (!(element = ff_imf_xml_get_child_element_by_name(marker_elem, "Label"))) { + av_log(NULL, AV_LOG_ERROR, "Label element not found in a Marker\n"); + return AVERROR_INVALIDDATA; + } + if (!(marker->label_utf8 = xmlNodeListGetString(element->doc, element->xmlChildrenNode, 1))) { + av_log(NULL, AV_LOG_ERROR, "Empty Label element found in a Marker\n"); + return AVERROR_INVALIDDATA; + } + if (!(marker->scope_utf8 = xmlGetNoNsProp(element, "scope"))) { + marker->scope_utf8 + = xmlCharStrdup("http://www.smpte-ra.org/schemas/2067-3/2013#standard-markers"); + if (!marker->scope_utf8) { + xmlFree(marker->label_utf8); + return AVERROR(ENOMEM); + } + } + + return ret; +} + +static int fill_base_resource(xmlNodePtr resource_elem, FFIMFBaseResource *resource, FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + int ret = 0; + + /* read EditRate */ + if (!(element = ff_imf_xml_get_child_element_by_name(resource_elem, "EditRate"))) { + resource->edit_rate = cpl->edit_rate; + } else if ((ret = ff_imf_xml_read_rational(element, &resource->edit_rate))) { + av_log(NULL, AV_LOG_ERROR, "Invalid EditRate element found in a Resource\n"); + return ret; + } + + /* read EntryPoint */ + if ((element = ff_imf_xml_get_child_element_by_name(resource_elem, "EntryPoint"))) { + if ((ret = ff_imf_xml_read_uint32(element, &resource->entry_point))) { + av_log(NULL, AV_LOG_ERROR, "Invalid EntryPoint element found in a Resource\n"); + return ret; + } + } else { + resource->entry_point = 0; + } + + /* read IntrinsicDuration */ + if (!(element = ff_imf_xml_get_child_element_by_name(resource_elem, "IntrinsicDuration"))) { + av_log(NULL, AV_LOG_ERROR, "IntrinsicDuration element missing from Resource\n"); + return AVERROR_INVALIDDATA; + } + if ((ret = ff_imf_xml_read_uint32(element, &resource->duration))) { + av_log(NULL, AV_LOG_ERROR, "Invalid IntrinsicDuration element found in a Resource\n"); + return ret; + } + resource->duration -= resource->entry_point; + + /* read SourceDuration */ + if ((element = ff_imf_xml_get_child_element_by_name(resource_elem, "SourceDuration"))) { + if ((ret = ff_imf_xml_read_uint32(element, &resource->duration))) { + av_log(NULL, AV_LOG_ERROR, "SourceDuration element missing from Resource\n"); + return ret; + } + } + + /* read RepeatCount */ + if ((element = ff_imf_xml_get_child_element_by_name(resource_elem, "RepeatCount"))) + ret = ff_imf_xml_read_uint32(element, &resource->repeat_count); + + return ret; +} + +static int fill_trackfile_resource(xmlNodePtr tf_resource_elem, + FFIMFTrackFileResource *tf_resource, + FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + int ret = 0; + + if ((ret = fill_base_resource(tf_resource_elem, (FFIMFBaseResource *)tf_resource, cpl))) + return ret; + + /* read TrackFileId */ + if ((element = ff_imf_xml_get_child_element_by_name(tf_resource_elem, "TrackFileId"))) { + if ((ret = ff_imf_xml_read_uuid(element, tf_resource->track_file_uuid))) { + av_log(NULL, AV_LOG_ERROR, "Invalid TrackFileId element found in Resource\n"); + return ret; + } + } else { + av_log(NULL, AV_LOG_ERROR, "TrackFileId element missing from Resource\n"); + return AVERROR_INVALIDDATA; + } + + return ret; +} + +static int fill_marker_resource(xmlNodePtr marker_resource_elem, + FFIMFMarkerResource *marker_resource, + FFIMFCPL *cpl) +{ + xmlNodePtr element = NULL; + int ret = 0; + + if ((ret = fill_base_resource(marker_resource_elem, (FFIMFBaseResource *)marker_resource, cpl))) + return ret; + + /* read markers */ + element = xmlFirstElementChild(marker_resource_elem); + while (element) { + if (xmlStrcmp(element->name, "Marker") == 0) { + void *tmp; + + if (marker_resource->marker_count == UINT32_MAX) + return AVERROR(ENOMEM); + tmp = av_realloc_array(marker_resource->markers, + marker_resource->marker_count + 1, + sizeof(FFIMFMarker)); + if (!tmp) + return AVERROR(ENOMEM); + marker_resource->markers = tmp; + + imf_marker_init(&marker_resource->markers[marker_resource->marker_count]); + ret = fill_marker(element, + &marker_resource->markers[marker_resource->marker_count]); + marker_resource->marker_count++; + if (ret) + return ret; + } + + element = xmlNextElementSibling(element); + } + + return ret; +} + +static int push_marker_sequence(xmlNodePtr marker_sequence_elem, FFIMFCPL *cpl) +{ + int ret = 0; + uint8_t uuid[16]; + xmlNodePtr resource_list_elem = NULL; + xmlNodePtr resource_elem = NULL; + xmlNodePtr track_id_elem = NULL; + unsigned long resource_elem_count; + void *tmp; + + /* read TrackID element */ + if (!(track_id_elem = ff_imf_xml_get_child_element_by_name(marker_sequence_elem, "TrackId"))) { + av_log(NULL, AV_LOG_ERROR, "TrackId element missing from Sequence\n"); + return AVERROR_INVALIDDATA; + } + if (ff_imf_xml_read_uuid(track_id_elem, uuid)) { + av_log(NULL, AV_LOG_ERROR, "Invalid TrackId element found in Sequence\n"); + return AVERROR_INVALIDDATA; + } + av_log(NULL, + AV_LOG_DEBUG, + "Processing IMF CPL Marker Sequence for Virtual Track " FF_IMF_UUID_FORMAT "\n", + UID_ARG(uuid)); + + /* create main marker virtual track if it does not exist */ + if (!cpl->main_markers_track) { + cpl->main_markers_track = av_malloc(sizeof(FFIMFMarkerVirtualTrack)); + if (!cpl->main_markers_track) + return AVERROR(ENOMEM); + imf_marker_virtual_track_init(cpl->main_markers_track); + memcpy(cpl->main_markers_track->base.id_uuid, uuid, sizeof(uuid)); + + } else if (memcmp(cpl->main_markers_track->base.id_uuid, uuid, sizeof(uuid)) != 0) { + av_log(NULL, AV_LOG_ERROR, "Multiple marker virtual tracks were found\n"); + return AVERROR_INVALIDDATA; + } + + /* process resources */ + resource_list_elem = ff_imf_xml_get_child_element_by_name(marker_sequence_elem, "ResourceList"); + if (!resource_list_elem) + return 0; + + resource_elem_count = xmlChildElementCount(resource_list_elem); + if (resource_elem_count > UINT32_MAX + || cpl->main_markers_track->resource_count > UINT32_MAX - resource_elem_count) + return AVERROR(ENOMEM); + tmp = av_realloc_array(cpl->main_markers_track->resources, + cpl->main_markers_track->resource_count + resource_elem_count, + sizeof(FFIMFMarkerResource)); + if (!tmp) { + av_log(NULL, AV_LOG_ERROR, "Cannot allocate Marker Resources\n"); + return AVERROR(ENOMEM); + } + cpl->main_markers_track->resources = tmp; + + resource_elem = xmlFirstElementChild(resource_list_elem); + while (resource_elem) { + imf_marker_resource_init(&cpl->main_markers_track->resources[cpl->main_markers_track->resource_count]); + ret = fill_marker_resource(resource_elem, + &cpl->main_markers_track->resources[cpl->main_markers_track->resource_count], + cpl); + cpl->main_markers_track->resource_count++; + if (ret) + return ret; + + resource_elem = xmlNextElementSibling(resource_elem); + } + + return ret; +} + +static int has_stereo_resources(xmlNodePtr element) +{ + if (xmlStrcmp(element->name, "Left") == 0 || xmlStrcmp(element->name, "Right") == 0) + return 1; + + element = xmlFirstElementChild(element); + while (element) { + if (has_stereo_resources(element)) + return 1; + + element = xmlNextElementSibling(element); + } + + return 0; +} + +static int push_main_audio_sequence(xmlNodePtr audio_sequence_elem, FFIMFCPL *cpl) +{ + int ret = 0; + uint8_t uuid[16]; + xmlNodePtr resource_list_elem = NULL; + xmlNodePtr resource_elem = NULL; + xmlNodePtr track_id_elem = NULL; + unsigned long resource_elem_count; + FFIMFTrackFileVirtualTrack *vt = NULL; + void *tmp; + + /* read TrackID element */ + if (!(track_id_elem = ff_imf_xml_get_child_element_by_name(audio_sequence_elem, "TrackId"))) { + av_log(NULL, AV_LOG_ERROR, "TrackId element missing from audio sequence\n"); + return AVERROR_INVALIDDATA; + } + if ((ret = ff_imf_xml_read_uuid(track_id_elem, uuid))) { + av_log(NULL, AV_LOG_ERROR, "Invalid TrackId element found in audio sequence\n"); + return ret; + } + av_log(NULL, + AV_LOG_DEBUG, + "Processing IMF CPL Audio Sequence for Virtual Track " FF_IMF_UUID_FORMAT "\n", + UID_ARG(uuid)); + + /* get the main audio virtual track corresponding to the sequence */ + for (uint32_t i = 0; i < cpl->main_audio_track_count; i++) { + if (memcmp(cpl->main_audio_tracks[i].base.id_uuid, uuid, sizeof(uuid)) == 0) { + vt = &cpl->main_audio_tracks[i]; + break; + } + } + + /* create a main audio virtual track if none exists for the sequence */ + if (!vt) { + if (cpl->main_audio_track_count == UINT32_MAX) + return AVERROR(ENOMEM); + tmp = av_realloc_array(cpl->main_audio_tracks, + cpl->main_audio_track_count + 1, + sizeof(FFIMFTrackFileVirtualTrack)); + if (!tmp) + return AVERROR(ENOMEM); + + cpl->main_audio_tracks = tmp; + vt = &cpl->main_audio_tracks[cpl->main_audio_track_count]; + imf_trackfile_virtual_track_init(vt); + cpl->main_audio_track_count++; + memcpy(vt->base.id_uuid, uuid, sizeof(uuid)); + } + + /* process resources */ + resource_list_elem = ff_imf_xml_get_child_element_by_name(audio_sequence_elem, "ResourceList"); + if (!resource_list_elem) + return 0; + + resource_elem_count = xmlChildElementCount(resource_list_elem); + if (resource_elem_count > UINT32_MAX + || vt->resource_count > UINT32_MAX - resource_elem_count) + return AVERROR(ENOMEM); + tmp = av_fast_realloc(vt->resources, + &vt->resources_alloc_sz, + (vt->resource_count + resource_elem_count) + * sizeof(FFIMFTrackFileResource)); + if (!tmp) { + av_log(NULL, AV_LOG_ERROR, "Cannot allocate Main Audio Resources\n"); + return AVERROR(ENOMEM); + } + vt->resources = tmp; + + resource_elem = xmlFirstElementChild(resource_list_elem); + while (resource_elem) { + imf_trackfile_resource_init(&vt->resources[vt->resource_count]); + ret = fill_trackfile_resource(resource_elem, + &vt->resources[vt->resource_count], + cpl); + vt->resource_count++; + if (ret) { + av_log(NULL, AV_LOG_ERROR, "Invalid Resource\n"); + continue; + } + + resource_elem = xmlNextElementSibling(resource_elem); + } + + return ret; +} + +static int push_main_image_2d_sequence(xmlNodePtr image_sequence_elem, FFIMFCPL *cpl) +{ + int ret = 0; + uint8_t uuid[16]; + xmlNodePtr resource_list_elem = NULL; + xmlNodePtr resource_elem = NULL; + xmlNodePtr track_id_elem = NULL; + void *tmp; + unsigned long resource_elem_count; + + /* skip stereoscopic resources */ + if (has_stereo_resources(image_sequence_elem)) { + av_log(NULL, AV_LOG_ERROR, "Stereoscopic 3D image virtual tracks not supported\n"); + return AVERROR_PATCHWELCOME; + } + + /* read TrackId element*/ + if (!(track_id_elem = ff_imf_xml_get_child_element_by_name(image_sequence_elem, "TrackId"))) { + av_log(NULL, AV_LOG_ERROR, "TrackId element missing from audio sequence\n"); + return AVERROR_INVALIDDATA; + } + if ((ret = ff_imf_xml_read_uuid(track_id_elem, uuid))) { + av_log(NULL, AV_LOG_ERROR, "Invalid TrackId element found in audio sequence\n"); + return ret; + } + + /* create main image virtual track if one does not exist */ + if (!cpl->main_image_2d_track) { + cpl->main_image_2d_track = av_malloc(sizeof(FFIMFTrackFileVirtualTrack)); + if (!cpl->main_image_2d_track) + return AVERROR(ENOMEM); + imf_trackfile_virtual_track_init(cpl->main_image_2d_track); + memcpy(cpl->main_image_2d_track->base.id_uuid, uuid, sizeof(uuid)); + + } else if (memcmp(cpl->main_image_2d_track->base.id_uuid, uuid, sizeof(uuid)) != 0) { + av_log(NULL, AV_LOG_ERROR, "Multiple MainImage virtual tracks found\n"); + return AVERROR_INVALIDDATA; + } + av_log(NULL, + AV_LOG_DEBUG, + "Processing IMF CPL Main Image Sequence for Virtual Track " FF_IMF_UUID_FORMAT "\n", + UID_ARG(uuid)); + + /* process resources */ + resource_list_elem = ff_imf_xml_get_child_element_by_name(image_sequence_elem, "ResourceList"); + if (!resource_list_elem) + return 0; + + resource_elem_count = xmlChildElementCount(resource_list_elem); + if (resource_elem_count > UINT32_MAX + || cpl->main_image_2d_track->resource_count > UINT32_MAX - resource_elem_count + || (cpl->main_image_2d_track->resource_count + resource_elem_count) + > INT_MAX / sizeof(FFIMFTrackFileResource)) + return AVERROR(ENOMEM); + tmp = av_fast_realloc(cpl->main_image_2d_track->resources, + &cpl->main_image_2d_track->resources_alloc_sz, + (cpl->main_image_2d_track->resource_count + resource_elem_count) + * sizeof(FFIMFTrackFileResource)); + if (!tmp) { + av_log(NULL, AV_LOG_ERROR, "Cannot allocate Main Image Resources\n"); + return AVERROR(ENOMEM); + } + cpl->main_image_2d_track->resources = tmp; + + resource_elem = xmlFirstElementChild(resource_list_elem); + while (resource_elem) { + imf_trackfile_resource_init( + &cpl->main_image_2d_track->resources[cpl->main_image_2d_track->resource_count]); + ret = fill_trackfile_resource(resource_elem, + &cpl->main_image_2d_track->resources[cpl->main_image_2d_track->resource_count], + cpl); + cpl->main_image_2d_track->resource_count++; + if (ret) { + av_log(NULL, AV_LOG_ERROR, "Invalid Resource\n"); + continue; + } + + resource_elem = xmlNextElementSibling(resource_elem); + } + + return 0; +} + +static int fill_virtual_tracks(xmlNodePtr cpl_element, FFIMFCPL *cpl) +{ + int ret = 0; + xmlNodePtr segment_list_elem = NULL; + xmlNodePtr segment_elem = NULL; + xmlNodePtr sequence_list_elem = NULL; + xmlNodePtr sequence_elem = NULL; + + if (!(segment_list_elem = ff_imf_xml_get_child_element_by_name(cpl_element, "SegmentList"))) { + av_log(NULL, AV_LOG_ERROR, "SegmentList element missing\n"); + return AVERROR_INVALIDDATA; + } + + /* process sequences */ + segment_elem = xmlFirstElementChild(segment_list_elem); + while (segment_elem) { + av_log(NULL, AV_LOG_DEBUG, "Processing IMF CPL Segment\n"); + + sequence_list_elem = ff_imf_xml_get_child_element_by_name(segment_elem, "SequenceList"); + if (!segment_list_elem) + continue; + + sequence_elem = xmlFirstElementChild(sequence_list_elem); + while (sequence_elem) { + if (xmlStrcmp(sequence_elem->name, "MarkerSequence") == 0) + ret = push_marker_sequence(sequence_elem, cpl); + + else if (xmlStrcmp(sequence_elem->name, "MainImageSequence") == 0) + ret = push_main_image_2d_sequence(sequence_elem, cpl); + + else if (xmlStrcmp(sequence_elem->name, "MainAudioSequence") == 0) + ret = push_main_audio_sequence(sequence_elem, cpl); + + else + av_log(NULL, + AV_LOG_INFO, + "The following Sequence is not supported and is ignored: %s\n", + sequence_elem->name); + + /* abort parsing only if memory error occurred */ + if (ret == AVERROR(ENOMEM)) + return ret; + + sequence_elem = xmlNextElementSibling(sequence_elem); + } + + segment_elem = xmlNextElementSibling(segment_elem); + } + + return ret; +} + +int ff_imf_parse_cpl_from_xml_dom(xmlDocPtr doc, FFIMFCPL **cpl) +{ + int ret = 0; + xmlNodePtr cpl_element = NULL; + + *cpl = ff_imf_cpl_alloc(); + if (!*cpl) { + ret = AVERROR(ENOMEM); + goto cleanup; + } + + cpl_element = xmlDocGetRootElement(doc); + if (xmlStrcmp(cpl_element->name, "CompositionPlaylist")) { + av_log(NULL, AV_LOG_ERROR, "The root element of the CPL is not CompositionPlaylist\n"); + ret = AVERROR_INVALIDDATA; + goto cleanup; + } + + if ((ret = fill_content_title(cpl_element, *cpl))) + goto cleanup; + if ((ret = fill_id(cpl_element, *cpl))) + goto cleanup; + if ((ret = fill_edit_rate(cpl_element, *cpl))) + goto cleanup; + if ((ret = fill_virtual_tracks(cpl_element, *cpl))) + goto cleanup; + +cleanup: + if (*cpl && ret) { + ff_imf_cpl_free(*cpl); + *cpl = NULL; + } + return ret; +} + +static void imf_marker_free(FFIMFMarker *marker) +{ + if (!marker) + return; + xmlFree(marker->label_utf8); + xmlFree(marker->scope_utf8); +} + +static void imf_marker_resource_free(FFIMFMarkerResource *rsrc) +{ + if (!rsrc) + return; + for (uint32_t i = 0; i < rsrc->marker_count; i++) + imf_marker_free(&rsrc->markers[i]); + av_freep(&rsrc->markers); +} + +static void imf_marker_virtual_track_free(FFIMFMarkerVirtualTrack *vt) +{ + if (!vt) + return; + for (uint32_t i = 0; i < vt->resource_count; i++) + imf_marker_resource_free(&vt->resources[i]); + av_freep(&vt->resources); +} + +static void imf_trackfile_virtual_track_free(FFIMFTrackFileVirtualTrack *vt) +{ + if (!vt) + return; + av_freep(&vt->resources); +} + +static void imf_cpl_init(FFIMFCPL *cpl) +{ + memset(cpl->id_uuid, 0, sizeof(cpl->id_uuid)); + cpl->content_title_utf8 = NULL; + cpl->edit_rate = av_make_q(0, 1); + cpl->main_markers_track = NULL; + cpl->main_image_2d_track = NULL; + cpl->main_audio_track_count = 0; + cpl->main_audio_tracks = NULL; +} + +FFIMFCPL *ff_imf_cpl_alloc(void) +{ + FFIMFCPL *cpl; + + cpl = av_malloc(sizeof(FFIMFCPL)); + if (!cpl) + return NULL; + imf_cpl_init(cpl); + return cpl; +} + +void ff_imf_cpl_free(FFIMFCPL *cpl) +{ + if (!cpl) + return; + + xmlFree(cpl->content_title_utf8); + + imf_marker_virtual_track_free(cpl->main_markers_track); + + if (cpl->main_markers_track) + av_freep(&cpl->main_markers_track); + + imf_trackfile_virtual_track_free(cpl->main_image_2d_track); + + if (cpl->main_image_2d_track) + av_freep(&cpl->main_image_2d_track); + + for (uint32_t i = 0; i < cpl->main_audio_track_count; i++) + imf_trackfile_virtual_track_free(&cpl->main_audio_tracks[i]); + + if (cpl->main_audio_tracks) + av_freep(&cpl->main_audio_tracks); + + av_freep(&cpl); +} + +int ff_imf_parse_cpl(AVIOContext *in, FFIMFCPL **cpl) +{ + AVBPrint buf; + xmlDoc *doc = NULL; + int ret = 0; + int64_t filesize = 0; + + filesize = avio_size(in); + filesize = filesize > 0 ? filesize : 8192; + av_bprint_init(&buf, filesize + 1, AV_BPRINT_SIZE_UNLIMITED); + ret = avio_read_to_bprint(in, &buf, UINT_MAX - 1); + if (ret < 0 || !avio_feof(in) || buf.len == 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot read IMF CPL\n"); + if (ret == 0) + ret = AVERROR_INVALIDDATA; + } else { + LIBXML_TEST_VERSION + + filesize = buf.len; + doc = xmlReadMemory(buf.str, filesize, NULL, NULL, 0); + if (!doc) { + av_log(NULL, + AV_LOG_ERROR, + "XML parsing failed when reading the IMF CPL\n"); + ret = AVERROR_INVALIDDATA; + } + + if ((ret = ff_imf_parse_cpl_from_xml_dom(doc, cpl))) { + av_log(NULL, AV_LOG_ERROR, "Cannot parse IMF CPL\n"); + } else { + av_log(NULL, + AV_LOG_INFO, + "IMF CPL ContentTitle: %s\n", + (*cpl)->content_title_utf8); + av_log(NULL, + AV_LOG_INFO, + "IMF CPL Id: " FF_IMF_UUID_FORMAT "\n", + UID_ARG((*cpl)->id_uuid)); + } + + xmlFreeDoc(doc); + } + + av_bprint_finalize(&buf, NULL); + + return ret; +} diff --git a/libavformat/imfdec.c b/libavformat/imfdec.c new file mode 100644 index 0000000000..f17064cfcd --- /dev/null +++ b/libavformat/imfdec.c @@ -0,0 +1,899 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * + * Copyright (c) Sandflow Consulting LLC + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/** + * Demuxes an IMF Composition + * + * References + * OV 2067-0:2018 - SMPTE Overview Document - Interoperable Master Format + * ST 2067-2:2020 - SMPTE Standard - Interoperable Master Format — Core Constraints + * ST 2067-3:2020 - SMPTE Standard - Interoperable Master Format — Composition Playlist + * ST 2067-5:2020 - SMPTE Standard - Interoperable Master Format — Essence Component + * ST 2067-20:2016 - SMPTE Standard - Interoperable Master Format — Application #2 + * ST 2067-21:2020 - SMPTE Standard - Interoperable Master Format — Application #2 Extended + * ST 2067-102:2017 - SMPTE Standard - Interoperable Master Format — Common Image Pixel Color Schemes + * ST 429-9:2007 - SMPTE Standard - D-Cinema Packaging — Asset Mapping and File Segmentation + * + * @author Marc-Antoine Arnaud + * @author Valentin Noel + * @author Nicholas Vanderzwet + * @file + * @ingroup lavu_imf + */ + +#include "avio_internal.h" +#include "imf.h" +#include "internal.h" +#include "libavutil/avstring.h" +#include "libavutil/bprint.h" +#include "libavutil/opt.h" +#include "mxf.h" +#include "url.h" +#include +#include + +#define MAX_BPRINT_READ_SIZE (UINT_MAX - 1) +#define DEFAULT_ASSETMAP_SIZE 8 * 1024 +#define AVRATIONAL_FORMAT "%d/%d" +#define AVRATIONAL_ARG(rational) rational.num, rational.den + +/** + * IMF Asset locator + */ +typedef struct IMFAssetLocator { + FFIMFUUID uuid; + char *absolute_uri; +} IMFAssetLocator; + +/** + * IMF Asset locator map + * Results from the parsing of one or more ASSETMAP XML files + */ +typedef struct IMFAssetLocatorMap { + uint32_t asset_count; + IMFAssetLocator *assets; +} IMFAssetLocatorMap; + +typedef struct IMFVirtualTrackResourcePlaybackCtx { + IMFAssetLocator *locator; + FFIMFTrackFileResource *resource; + AVFormatContext *ctx; +} IMFVirtualTrackResourcePlaybackCtx; + +typedef struct IMFVirtualTrackPlaybackCtx { + int32_t index; /**< Track index in playlist */ + AVRational current_timestamp; /**< Current temporal position */ + AVRational duration; /**< Overall duration */ + uint32_t resource_count; /**< Number of resources */ + unsigned int resources_alloc_sz; /**< Size of the buffer holding the resource */ + IMFVirtualTrackResourcePlaybackCtx *resources; /**< Buffer holding the resources */ + uint32_t current_resource_index; /**< Current resource */ + int64_t last_pts; /**< Last timestamp */ +} IMFVirtualTrackPlaybackCtx; + +typedef struct IMFContext { + const AVClass *class; + const char *base_url; + char *asset_map_paths; + AVIOInterruptCB *interrupt_callback; + AVDictionary *avio_opts; + FFIMFCPL *cpl; + IMFAssetLocatorMap asset_locator_map; + uint32_t track_count; + IMFVirtualTrackPlaybackCtx **tracks; +} IMFContext; + +static int imf_uri_is_url(const char *string) +{ + return strstr(string, "://") != NULL; +} + +static int imf_uri_is_unix_abs_path(const char *string) +{ + return string[0] == '/'; +} + +static int imf_uri_is_dos_abs_path(const char *string) +{ + /* Absolute path case: `C:\path\to\somwhere` */ + if (string[1] == ':' && string[2] == '\\') + return 1; + + /* Absolute path case: `C:/path/to/somwhere` */ + if (string[1] == ':' && string[2] == '/') + return 1; + + /* Network path case: `\\path\to\somwhere` */ + if (string[0] == '\\' && string[1] == '\\') + return 1; + + return 0; +} + +/** + * Parse a ASSETMAP XML file to extract the UUID-URI mapping of assets. + * @param s the current format context, if any (can be NULL). + * @param doc the XML document to be parsed. + * @param asset_map pointer on the IMFAssetLocatorMap to fill. + * @param base_url the url of the asset map XML file, if any (can be NULL). + * @return a negative value in case of error, 0 otherwise. + */ +static int parse_imf_asset_map_from_xml_dom(AVFormatContext *s, + xmlDocPtr doc, + IMFAssetLocatorMap *asset_map, + const char *base_url) +{ + xmlNodePtr asset_map_element = NULL; + xmlNodePtr node = NULL; + xmlNodePtr asset_element = NULL; + unsigned long elem_count; + char *uri; + int ret = 0; + IMFAssetLocator *asset = NULL; + void *tmp; + + asset_map_element = xmlDocGetRootElement(doc); + + if (!asset_map_element) { + av_log(s, AV_LOG_ERROR, "Unable to parse asset map XML - missing root node\n"); + return AVERROR_INVALIDDATA; + } + + if (asset_map_element->type != XML_ELEMENT_NODE || av_strcasecmp(asset_map_element->name, "AssetMap")) { + av_log(s, + AV_LOG_ERROR, + "Unable to parse asset map XML - wrong root node name[%s] type[%d]\n", + asset_map_element->name, + (int)asset_map_element->type); + return AVERROR_INVALIDDATA; + } + + /* parse asset locators */ + if (!(node = ff_imf_xml_get_child_element_by_name(asset_map_element, "AssetList"))) { + av_log(s, AV_LOG_ERROR, "Unable to parse asset map XML - missing AssetList node\n"); + return AVERROR_INVALIDDATA; + } + elem_count = xmlChildElementCount(node); + if (elem_count > UINT32_MAX + || asset_map->asset_count > UINT32_MAX - elem_count) + return AVERROR(ENOMEM); + tmp = av_realloc_array(asset_map->assets, + elem_count + asset_map->asset_count, + sizeof(IMFAssetLocator)); + if (!tmp) { + av_log(NULL, AV_LOG_ERROR, "Cannot allocate IMF asset locators\n"); + return AVERROR(ENOMEM); + } + asset_map->assets = tmp; + + asset_element = xmlFirstElementChild(node); + while (asset_element) { + if (av_strcasecmp(asset_element->name, "Asset") != 0) + continue; + + asset = &(asset_map->assets[asset_map->asset_count]); + + if (ff_imf_xml_read_uuid(ff_imf_xml_get_child_element_by_name(asset_element, "Id"), asset->uuid)) { + av_log(s, AV_LOG_ERROR, "Could not parse UUID from asset in asset map.\n"); + return AVERROR_INVALIDDATA; + } + + av_log(s, AV_LOG_DEBUG, "Found asset id: " FF_IMF_UUID_FORMAT "\n", UID_ARG(asset->uuid)); + + if (!(node = ff_imf_xml_get_child_element_by_name(asset_element, "ChunkList"))) { + av_log(s, AV_LOG_ERROR, "Unable to parse asset map XML - missing ChunkList node\n"); + return AVERROR_INVALIDDATA; + } + + if (!(node = ff_imf_xml_get_child_element_by_name(node, "Chunk"))) { + av_log(s, AV_LOG_ERROR, "Unable to parse asset map XML - missing Chunk node\n"); + return AVERROR_INVALIDDATA; + } + + uri = xmlNodeGetContent(ff_imf_xml_get_child_element_by_name(node, "Path")); + if (!imf_uri_is_url(uri) && !imf_uri_is_unix_abs_path(uri) && !imf_uri_is_dos_abs_path(uri)) + asset->absolute_uri = av_append_path_component(base_url, uri); + else + asset->absolute_uri = av_strdup(uri); + xmlFree(uri); + if (!asset->absolute_uri) + return AVERROR(ENOMEM); + + av_log(s, AV_LOG_DEBUG, "Found asset absolute URI: %s\n", asset->absolute_uri); + + asset_map->asset_count++; + asset_element = xmlNextElementSibling(asset_element); + } + + return ret; +} + +/** + * Initializes an IMFAssetLocatorMap structure. + */ +static void imf_asset_locator_map_init(IMFAssetLocatorMap *asset_map) +{ + asset_map->assets = NULL; + asset_map->asset_count = 0; +} + +/** + * Free a IMFAssetLocatorMap pointer. + */ +static void imf_asset_locator_map_deinit(IMFAssetLocatorMap *asset_map) +{ + for (uint32_t i = 0; i < asset_map->asset_count; ++i) + av_freep(&asset_map->assets[i].absolute_uri); + + av_freep(&asset_map->assets); +} + +static int parse_assetmap(AVFormatContext *s, const char *url) +{ + IMFContext *c = s->priv_data; + AVIOContext *in = NULL; + struct AVBPrint buf; + AVDictionary *opts = NULL; + xmlDoc *doc = NULL; + const char *base_url; + char *tmp_str = NULL; + int ret; + int64_t filesize; + + av_log(s, AV_LOG_DEBUG, "Asset Map URL: %s\n", url); + + av_dict_copy(&opts, c->avio_opts, 0); + ret = s->io_open(s, &in, url, AVIO_FLAG_READ, &opts); + av_dict_free(&opts); + if (ret < 0) + return ret; + + filesize = avio_size(in); + filesize = filesize > 0 ? filesize : DEFAULT_ASSETMAP_SIZE; + + av_bprint_init(&buf, filesize + 1, AV_BPRINT_SIZE_UNLIMITED); + + ret = avio_read_to_bprint(in, &buf, MAX_BPRINT_READ_SIZE); + if (ret < 0 || !avio_feof(in) || buf.len == 0) { + av_log(s, AV_LOG_ERROR, "Unable to read to asset map '%s'\n", url); + if (ret == 0) + ret = AVERROR_INVALIDDATA; + goto clean_up; + } + + LIBXML_TEST_VERSION + + tmp_str = av_strdup(url); + if (!tmp_str) { + ret = AVERROR(ENOMEM); + goto clean_up; + } + base_url = av_dirname(tmp_str); + + filesize = buf.len; + doc = xmlReadMemory(buf.str, filesize, url, NULL, 0); + + ret = parse_imf_asset_map_from_xml_dom(s, doc, &c->asset_locator_map, base_url); + if (!ret) + av_log(s, + AV_LOG_DEBUG, + "Found %d assets from %s\n", + c->asset_locator_map.asset_count, + url); + + xmlFreeDoc(doc); + +clean_up: + if (tmp_str) + av_freep(&tmp_str); + ff_format_io_close(s, &in); + av_bprint_finalize(&buf, NULL); + return ret; +} + +static IMFAssetLocator *find_asset_map_locator(IMFAssetLocatorMap *asset_map, FFIMFUUID uuid) +{ + for (uint32_t i = 0; i < asset_map->asset_count; ++i) { + if (memcmp(asset_map->assets[i].uuid, uuid, 16) == 0) + return &(asset_map->assets[i]); + } + return NULL; +} + +static int open_track_resource_context(AVFormatContext *s, + IMFVirtualTrackResourcePlaybackCtx *track_resource) +{ + IMFContext *c = s->priv_data; + int ret = 0; + int64_t entry_point; + AVDictionary *opts = NULL; + + if (track_resource->ctx) { + av_log(s, + AV_LOG_DEBUG, + "Input context already opened for %s.\n", + track_resource->locator->absolute_uri); + return 0; + } + + track_resource->ctx = avformat_alloc_context(); + if (!track_resource->ctx) + return AVERROR(ENOMEM); + + track_resource->ctx->io_open = s->io_open; + track_resource->ctx->io_close = s->io_close; + track_resource->ctx->io_close2 = s->io_close2; + track_resource->ctx->flags |= s->flags & ~AVFMT_FLAG_CUSTOM_IO; + + if ((ret = ff_copy_whiteblacklists(track_resource->ctx, s)) < 0) + goto cleanup; + + if ((ret = av_opt_set(track_resource->ctx, "format_whitelist", "mxf", 0))) + goto cleanup; + + if ((ret = av_dict_copy(&opts, c->avio_opts, 0)) < 0) + goto cleanup; + + ret = avformat_open_input(&track_resource->ctx, + track_resource->locator->absolute_uri, + NULL, + &opts); + if (ret < 0) { + av_log(s, + AV_LOG_ERROR, + "Could not open %s input context: %s\n", + track_resource->locator->absolute_uri, + av_err2str(ret)); + goto cleanup; + } + av_dict_free(&opts); + + /* Compare the source timebase to the resource edit rate, + * considering the first stream of the source file + */ + if (av_cmp_q(track_resource->ctx->streams[0]->time_base, + av_inv_q(track_resource->resource->base.edit_rate))) + av_log(s, + AV_LOG_WARNING, + "Incoherent source stream timebase %d/%d regarding resource edit rate: %d/%d", + track_resource->ctx->streams[0]->time_base.num, + track_resource->ctx->streams[0]->time_base.den, + track_resource->resource->base.edit_rate.den, + track_resource->resource->base.edit_rate.num); + + entry_point = (int64_t)track_resource->resource->base.entry_point + * track_resource->resource->base.edit_rate.den + * AV_TIME_BASE + / track_resource->resource->base.edit_rate.num; + + if (entry_point) { + av_log(s, + AV_LOG_DEBUG, + "Seek at resource %s entry point: %" PRIu32 "\n", + track_resource->locator->absolute_uri, + track_resource->resource->base.entry_point); + ret = avformat_seek_file(track_resource->ctx, -1, entry_point, entry_point, entry_point, 0); + if (ret < 0) { + av_log(s, + AV_LOG_ERROR, + "Could not seek at %" PRId64 "on %s: %s\n", + entry_point, + track_resource->locator->absolute_uri, + av_err2str(ret)); + avformat_close_input(&track_resource->ctx); + return ret; + } + } + + return 0; + +cleanup: + av_dict_free(&opts); + avformat_free_context(track_resource->ctx); + track_resource->ctx = NULL; + return ret; +} + +static int open_track_file_resource(AVFormatContext *s, + FFIMFTrackFileResource *track_file_resource, + IMFVirtualTrackPlaybackCtx *track) +{ + IMFContext *c = s->priv_data; + IMFAssetLocator *asset_locator; + void *tmp; + int ret; + + asset_locator = find_asset_map_locator(&c->asset_locator_map, track_file_resource->track_file_uuid); + if (!asset_locator) { + av_log(s, + AV_LOG_ERROR, + "Could not find asset locator for UUID: " FF_IMF_UUID_FORMAT "\n", + UID_ARG(track_file_resource->track_file_uuid)); + return AVERROR_INVALIDDATA; + } + + av_log(s, + AV_LOG_DEBUG, + "Found locator for " FF_IMF_UUID_FORMAT ": %s\n", + UID_ARG(asset_locator->uuid), + asset_locator->absolute_uri); + + if (track->resource_count > UINT32_MAX - track_file_resource->base.repeat_count + || (track->resource_count + track_file_resource->base.repeat_count) + > INT_MAX / sizeof(IMFVirtualTrackResourcePlaybackCtx)) + return AVERROR(ENOMEM); + tmp = av_fast_realloc(track->resources, + &track->resources_alloc_sz, + (track->resource_count + track_file_resource->base.repeat_count) + * sizeof(IMFVirtualTrackResourcePlaybackCtx)); + if (!tmp) + return AVERROR(ENOMEM); + track->resources = tmp; + + for (uint32_t i = 0; i < track_file_resource->base.repeat_count; ++i) { + IMFVirtualTrackResourcePlaybackCtx vt_ctx; + + vt_ctx.locator = asset_locator; + vt_ctx.resource = track_file_resource; + vt_ctx.ctx = NULL; + if ((ret = open_track_resource_context(s, &vt_ctx)) != 0) + return ret; + track->resources[track->resource_count++] = vt_ctx; + track->duration = av_add_q(track->duration, + av_make_q((int)track_file_resource->base.duration + * track_file_resource->base.edit_rate.den, + track_file_resource->base.edit_rate.num)); + } + + return 0; +} + +static void imf_virtual_track_playback_context_deinit(IMFVirtualTrackPlaybackCtx *track) +{ + for (uint32_t i = 0; i < track->resource_count; ++i) + avformat_close_input(&track->resources[i].ctx); + + av_freep(&track->resources); +} + +static int open_virtual_track(AVFormatContext *s, + FFIMFTrackFileVirtualTrack *virtual_track, + int32_t track_index) +{ + IMFContext *c = s->priv_data; + IMFVirtualTrackPlaybackCtx *track = NULL; + void *tmp; + int ret = 0; + + if (!(track = av_mallocz(sizeof(IMFVirtualTrackPlaybackCtx)))) + return AVERROR(ENOMEM); + track->index = track_index; + track->duration = av_make_q(0, 1); + + for (uint32_t i = 0; i < virtual_track->resource_count; i++) { + av_log(s, + AV_LOG_DEBUG, + "Open stream from file " FF_IMF_UUID_FORMAT ", stream %d\n", + UID_ARG(virtual_track->resources[i].track_file_uuid), + i); + if ((ret = open_track_file_resource(s, &virtual_track->resources[i], track)) != 0) { + av_log(s, + AV_LOG_ERROR, + "Could not open image track resource " FF_IMF_UUID_FORMAT "\n", + UID_ARG(virtual_track->resources[i].track_file_uuid)); + goto clean_up; + } + } + + track->current_timestamp = av_make_q(0, track->duration.den); + + if (c->track_count == UINT32_MAX) { + ret = AVERROR(ENOMEM); + goto clean_up; + } + tmp = av_realloc_array(c->tracks, c->track_count + 1, sizeof(IMFVirtualTrackPlaybackCtx *)); + if (!tmp) { + ret = AVERROR(ENOMEM); + goto clean_up; + } + c->tracks = tmp; + c->tracks[c->track_count++] = track; + + return 0; + +clean_up: + imf_virtual_track_playback_context_deinit(track); + av_free(track); + return ret; +} + +static int set_context_streams_from_tracks(AVFormatContext *s) +{ + IMFContext *c = s->priv_data; + int ret = 0; + + for (uint32_t i = 0; i < c->track_count; ++i) { + AVStream *asset_stream; + AVStream *first_resource_stream; + + /* Open the first resource of the track to get stream information */ + first_resource_stream = c->tracks[i]->resources[0].ctx->streams[0]; + av_log(s, AV_LOG_DEBUG, "Open the first resource of track %d\n", c->tracks[i]->index); + + /* Copy stream information */ + asset_stream = avformat_new_stream(s, NULL); + if (!asset_stream) { + ret = AVERROR(ENOMEM); + av_log(s, AV_LOG_ERROR, "Could not create stream\n"); + break; + } + asset_stream->id = i; + ret = avcodec_parameters_copy(asset_stream->codecpar, first_resource_stream->codecpar); + if (ret < 0) { + av_log(s, AV_LOG_ERROR, "Could not copy stream parameters\n"); + return ret; + } + avpriv_set_pts_info(asset_stream, + first_resource_stream->pts_wrap_bits, + first_resource_stream->time_base.num, + first_resource_stream->time_base.den); + asset_stream->duration = (int64_t)av_q2d(av_mul_q(c->tracks[i]->duration, + av_inv_q(asset_stream->time_base))); + } + + return 0; +} + +static int open_cpl_tracks(AVFormatContext *s) +{ + IMFContext *c = s->priv_data; + int32_t track_index = 0; + int ret; + + if (c->cpl->main_image_2d_track) { + if ((ret = open_virtual_track(s, c->cpl->main_image_2d_track, track_index++)) != 0) { + av_log(s, + AV_LOG_ERROR, + "Could not open image track " FF_IMF_UUID_FORMAT "\n", + UID_ARG(c->cpl->main_image_2d_track->base.id_uuid)); + return ret; + } + } + + for (uint32_t i = 0; i < c->cpl->main_audio_track_count; ++i) { + if ((ret = open_virtual_track(s, &c->cpl->main_audio_tracks[i], track_index++)) != 0) { + av_log(s, + AV_LOG_ERROR, + "Could not open audio track " FF_IMF_UUID_FORMAT "\n", + UID_ARG(c->cpl->main_audio_tracks[i].base.id_uuid)); + return ret; + } + } + + return set_context_streams_from_tracks(s); +} + +static int imf_read_header(AVFormatContext *s) +{ + IMFContext *c = s->priv_data; + char *asset_map_path; + char *tmp_str; + int ret = 0; + + c->interrupt_callback = &s->interrupt_callback; + tmp_str = av_strdup(s->url); + if (!tmp_str) + return AVERROR(ENOMEM); + + c->base_url = av_dirname(tmp_str); + if ((ret = ffio_copy_url_options(s->pb, &c->avio_opts)) < 0) + return ret; + + av_log(s, AV_LOG_DEBUG, "start parsing IMF CPL: %s\n", s->url); + + if ((ret = ff_imf_parse_cpl(s->pb, &c->cpl)) < 0) + return ret; + + av_log(s, + AV_LOG_DEBUG, + "parsed IMF CPL: " FF_IMF_UUID_FORMAT "\n", + UID_ARG(c->cpl->id_uuid)); + + if (!c->asset_map_paths) { + c->asset_map_paths = av_append_path_component(c->base_url, "ASSETMAP.xml"); + if (!c->asset_map_paths) { + ret = AVERROR(ENOMEM); + return ret; + } + av_log(s, AV_LOG_DEBUG, "No asset maps provided, using the default ASSETMAP.xml\n"); + } + + /* Parse each asset map XML file */ + imf_asset_locator_map_init(&c->asset_locator_map); + asset_map_path = av_strtok(c->asset_map_paths, ",", &tmp_str); + while (asset_map_path != NULL) { + av_log(s, AV_LOG_DEBUG, "start parsing IMF Asset Map: %s\n", asset_map_path); + + if ((ret = parse_assetmap(s, asset_map_path))) + return ret; + + asset_map_path = av_strtok(NULL, ",", &tmp_str); + } + + av_log(s, AV_LOG_DEBUG, "parsed IMF Asset Maps\n"); + + if ((ret = open_cpl_tracks(s))) + return ret; + + av_log(s, AV_LOG_DEBUG, "parsed IMF package\n"); + + return 0; +} + +static IMFVirtualTrackPlaybackCtx *get_next_track_with_minimum_timestamp(AVFormatContext *s) +{ + IMFContext *c = s->priv_data; + IMFVirtualTrackPlaybackCtx *track; + + AVRational minimum_timestamp = av_make_q(INT32_MAX, 1); + for (uint32_t i = c->track_count; i > 0; i--) { + av_log(s, + AV_LOG_DEBUG, + "Compare track %d timestamp " AVRATIONAL_FORMAT + " to minimum " AVRATIONAL_FORMAT + " (over duration: " AVRATIONAL_FORMAT + ")\n", + i, + AVRATIONAL_ARG(c->tracks[i - 1]->current_timestamp), + AVRATIONAL_ARG(minimum_timestamp), + AVRATIONAL_ARG(c->tracks[i - 1]->duration)); + + if (av_cmp_q(c->tracks[i - 1]->current_timestamp, minimum_timestamp) <= 0) { + track = c->tracks[i - 1]; + minimum_timestamp = track->current_timestamp; + } + } + + av_log(s, + AV_LOG_DEBUG, + "Found next track to read: %d (timestamp: %lf / %lf)\n", + track->index, + av_q2d(track->current_timestamp), + av_q2d(minimum_timestamp)); + return track; +} + +static IMFVirtualTrackResourcePlaybackCtx *get_resource_context_for_timestamp(AVFormatContext *s, + IMFVirtualTrackPlaybackCtx *track) +{ + AVRational edit_unit_duration = av_inv_q(track->resources[0].resource->base.edit_rate); + AVRational cumulated_duration = av_make_q(0, edit_unit_duration.den); + + av_log(s, + AV_LOG_DEBUG, + "Looking for track %d resource for timestamp = %lf / %lf\n", + track->index, + av_q2d(track->current_timestamp), + av_q2d(track->duration)); + for (uint32_t i = 0; i < track->resource_count; ++i) { + cumulated_duration = av_add_q(cumulated_duration, + av_make_q((int)track->resources[i].resource->base.duration + * edit_unit_duration.num, + edit_unit_duration.den)); + + if (av_cmp_q(av_add_q(track->current_timestamp, edit_unit_duration), cumulated_duration) <= 0) { + av_log(s, + AV_LOG_DEBUG, + "Found resource %d in track %d to read for timestamp %lf " + "(on cumulated=%lf): entry=%" PRIu32 + ", duration=%" PRIu32 + ", editrate=" AVRATIONAL_FORMAT + " | edit_unit_duration=%lf\n", + i, + track->index, + av_q2d(track->current_timestamp), + av_q2d(cumulated_duration), + track->resources[i].resource->base.entry_point, + track->resources[i].resource->base.duration, + AVRATIONAL_ARG(track->resources[i].resource->base.edit_rate), + av_q2d(edit_unit_duration)); + + if (track->current_resource_index != i) { + av_log(s, + AV_LOG_DEBUG, + "Switch resource on track %d: re-open context\n", + track->index); + if (open_track_resource_context(s, &(track->resources[i])) != 0) + return NULL; + avformat_close_input(&(track->resources[track->current_resource_index].ctx)); + track->current_resource_index = i; + } + + return &(track->resources[track->current_resource_index]); + } + } + return NULL; +} + +static int imf_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + IMFContext *c = s->priv_data; + IMFVirtualTrackResourcePlaybackCtx *resource_to_read = NULL; + AVRational edit_unit_duration; + int ret = 0; + IMFVirtualTrackPlaybackCtx *track; + FFStream *track_stream; + + track = get_next_track_with_minimum_timestamp(s); + + if (av_cmp_q(track->current_timestamp, track->duration) == 0) + return AVERROR_EOF; + + resource_to_read = get_resource_context_for_timestamp(s, track); + + if (!resource_to_read) { + edit_unit_duration + = av_inv_q(track->resources[track->current_resource_index].resource->base.edit_rate); + + if (av_cmp_q(av_add_q(track->current_timestamp, edit_unit_duration), track->duration) > 0) + return AVERROR_EOF; + + av_log(s, AV_LOG_ERROR, "Could not find IMF track resource to read\n"); + return AVERROR_STREAM_NOT_FOUND; + } + + while (!ff_check_interrupt(c->interrupt_callback) && !ret) { + ret = av_read_frame(resource_to_read->ctx, pkt); + av_log(s, + AV_LOG_DEBUG, + "Got packet: pts=%" PRId64 + ", dts=%" PRId64 + ", duration=%" PRId64 + ", stream_index=%d, pos=%" PRId64 + "\n", + pkt->pts, + pkt->dts, + pkt->duration, + pkt->stream_index, + pkt->pos); + + track_stream = ffstream(s->streams[track->index]); + if (ret >= 0) { + /* Update packet info from track */ + if (pkt->dts < track_stream->cur_dts && track->last_pts > 0) + pkt->dts = track_stream->cur_dts; + + pkt->pts = track->last_pts; + pkt->dts = pkt->dts + - (int64_t)track->resources[track->current_resource_index].resource->base.entry_point; + pkt->stream_index = track->index; + + /* Update track cursors */ + track->current_timestamp + = av_add_q(track->current_timestamp, + av_make_q((int)pkt->duration + * resource_to_read->ctx->streams[0]->time_base.num, + resource_to_read->ctx->streams[0]->time_base.den)); + track->last_pts += pkt->duration; + + return 0; + } else if (ret != AVERROR_EOF) { + av_log(s, + AV_LOG_ERROR, + "Could not get packet from track %d: %s\n", + track->index, + av_err2str(ret)); + return ret; + } + } + + return AVERROR_EOF; +} + +static int imf_close(AVFormatContext *s) +{ + IMFContext *c = s->priv_data; + + av_log(s, AV_LOG_DEBUG, "Close IMF package\n"); + av_dict_free(&c->avio_opts); + av_freep(&c->base_url); + imf_asset_locator_map_deinit(&c->asset_locator_map); + ff_imf_cpl_free(c->cpl); + + for (uint32_t i = 0; i < c->track_count; ++i) { + imf_virtual_track_playback_context_deinit(c->tracks[i]); + av_freep(&c->tracks[i]); + } + + av_freep(&c->tracks); + + return 0; +} + +static int imf_probe(const AVProbeData *p) +{ + if (!strstr(p->buf, "buf, "ContentTitle>")) + return 0; + + return AVPROBE_SCORE_MAX; +} + +static const AVOption imf_options[] = { + { + .name = "assetmaps", + .help = "Comma-separated paths to ASSETMAP files." + "If not specified, the `ASSETMAP.xml` file in the same " + "directory as the CPL is used.", + .offset = offsetof(IMFContext, asset_map_paths), + .type = AV_OPT_TYPE_STRING, + .default_val = {.str = NULL}, + .flags = AV_OPT_FLAG_DECODING_PARAM, + }, + {NULL}, +}; + +static const AVClass imf_class = { + .class_name = "imf", + .item_name = av_default_item_name, + .option = imf_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +const AVInputFormat ff_imf_demuxer = { + .name = "imf", + .long_name = NULL_IF_CONFIG_SMALL("IMF (Interoperable Master Format)"), + .flags_internal = FF_FMT_INIT_CLEANUP, + .priv_class = &imf_class, + .priv_data_size = sizeof(IMFContext), + .read_probe = imf_probe, + .read_header = imf_read_header, + .read_packet = imf_read_packet, + .read_close = imf_close, +}; diff --git a/libavformat/version.h b/libavformat/version.h index 9b90bbf156..917b9ffa5d 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,7 +32,7 @@ // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium) // Also please add any ticket numbers that you believe might be affected here #define LIBAVFORMAT_VERSION_MAJOR 59 -#define LIBAVFORMAT_VERSION_MINOR 11 +#define LIBAVFORMAT_VERSION_MINOR 12 #define LIBAVFORMAT_VERSION_MICRO 100 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \