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ffprobe: add an array of section print buffers to the WriterContext 

Allow to factorize buffers initialization/release, for all the writers
which use it. Simplify.
This commit is contained in:
Stefano Sabatini 2012-10-24 12:06:21 +02:00
parent a161def1e4
commit a945607a78
1 changed files with 27 additions and 89 deletions
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116
ffprobe.c
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@ -247,6 +247,8 @@ struct WriterContext {
/** section per each level */
const struct section *section[SECTION_MAX_NB_LEVELS];
AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
/// used by various writers
unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
unsigned int nb_section_frame; ///< number of the frame section in case we are in "packets_and_frames" section
@ -268,11 +270,15 @@ static const AVClass writer_class = {
static void writer_close(WriterContext **wctx)
{
int i;
if (!*wctx)
return;
if ((*wctx)->writer->uninit)
(*wctx)->writer->uninit(*wctx);
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
if ((*wctx)->writer->priv_class)
av_opt_free((*wctx)->priv);
av_freep(&((*wctx)->priv));
@ -282,7 +288,7 @@ static void writer_close(WriterContext **wctx)
static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
const struct section *sections, int nb_sections)
{
int ret = 0;
int i, ret = 0;
if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
ret = AVERROR(ENOMEM);
@ -309,6 +315,10 @@ static int writer_open(WriterContext **wctx, const Writer *writer, const char *a
(ret = av_set_options_string(priv_ctx, args, "=", ":")) < 0)
goto fail;
}
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
if ((*wctx)->writer->init)
ret = (*wctx)->writer->init(*wctx);
if (ret < 0)
@ -496,7 +506,6 @@ typedef struct DefaultContext {
int nokey;
int noprint_wrappers;
int nested_section[SECTION_MAX_NB_LEVELS];
AVBPrint prefix[SECTION_MAX_NB_LEVELS];
} DefaultContext;
#define OFFSET(x) offsetof(DefaultContext, x)
@ -521,25 +530,6 @@ static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
return dst;
}
static int default_init(WriterContext *wctx)
{
DefaultContext *def = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&def->prefix[i], 1, AV_BPRINT_SIZE_UNLIMITED);
return 0;
}
static void default_uninit(WriterContext *wctx)
{
DefaultContext *def = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&def->prefix[i], NULL);
}
static void default_print_section_header(WriterContext *wctx)
{
DefaultContext *def = wctx->priv;
@ -548,11 +538,12 @@ static void default_print_section_header(WriterContext *wctx)
const struct section *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
av_bprint_clear(&def->prefix[wctx->level]);
av_bprint_clear(&wctx->section_pbuf[wctx->level]);
if (parent_section &&
!(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
def->nested_section[wctx->level] = 1;
av_bprintf(&def->prefix[wctx->level], "%s%s:", def->prefix[wctx->level-1].str,
av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
wctx->section_pbuf[wctx->level-1].str,
upcase_string(buf, sizeof(buf),
av_x_if_null(section->element_name, section->name)));
}
@ -582,7 +573,7 @@ static void default_print_str(WriterContext *wctx, const char *key, const char *
DefaultContext *def = wctx->priv;
if (!def->nokey)
printf("%s%s=", def->prefix[wctx->level].str, key);
printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
printf("%s\n", value);
}
@ -591,15 +582,13 @@ static void default_print_int(WriterContext *wctx, const char *key, long long in
DefaultContext *def = wctx->priv;
if (!def->nokey)
printf("%s%s=", def->prefix[wctx->level].str, key);
printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
printf("%lld\n", value);
}
static const Writer default_writer = {
.name = "default",
.priv_size = sizeof(DefaultContext),
.init = default_init,
.uninit = default_uninit,
.print_section_header = default_print_section_header,
.print_section_footer = default_print_section_footer,
.print_integer = default_print_int,
@ -668,7 +657,6 @@ typedef struct CompactContext {
char *escape_mode_str;
const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
int nested_section[SECTION_MAX_NB_LEVELS];
AVBPrint prefix[SECTION_MAX_NB_LEVELS];
} CompactContext;
#undef OFFSET
@ -691,7 +679,6 @@ DEFINE_WRITER_CLASS(compact);
static av_cold int compact_init(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
int i;
if (strlen(compact->item_sep_str) != 1) {
av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
@ -708,20 +695,9 @@ static av_cold int compact_init(WriterContext *wctx)
return AVERROR(EINVAL);
}
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&compact->prefix[i], 1, AV_BPRINT_SIZE_UNLIMITED);
return 0;
}
static void compact_uninit(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&compact->prefix[i], NULL);
}
static void compact_print_section_header(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
@ -729,12 +705,12 @@ static void compact_print_section_header(WriterContext *wctx)
const struct section *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
av_bprint_clear(&compact->prefix[wctx->level]);
av_bprint_clear(&wctx->section_pbuf[wctx->level]);
if (parent_section &&
!(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
compact->nested_section[wctx->level] = 1;
av_bprintf(&compact->prefix[wctx->level], "%s%s:",
compact->prefix[wctx->level-1].str,
av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
wctx->section_pbuf[wctx->level-1].str,
(char *)av_x_if_null(section->element_name, section->name));
wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
} else if (compact->print_section &&
@ -758,7 +734,7 @@ static void compact_print_str(WriterContext *wctx, const char *key, const char *
if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s%s=", compact->prefix[wctx->level].str, key);
printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
av_bprint_finalize(&buf, NULL);
@ -770,7 +746,7 @@ static void compact_print_int(WriterContext *wctx, const char *key, long long in
if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s%s=", compact->prefix[wctx->level].str, key);
printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
printf("%lld", value);
}
@ -778,7 +754,6 @@ static const Writer compact_writer = {
.name = "compact",
.priv_size = sizeof(CompactContext),
.init = compact_init,
.uninit = compact_uninit,
.print_section_header = compact_print_section_header,
.print_section_footer = compact_print_section_footer,
.print_integer = compact_print_int,
@ -822,7 +797,6 @@ static const Writer csv_writer = {
typedef struct FlatContext {
const AVClass *class;
AVBPrint section_header[SECTION_MAX_NB_LEVELS];
const char *sep_str;
char sep;
int hierarchical;
@ -844,7 +818,6 @@ DEFINE_WRITER_CLASS(flat);
static av_cold int flat_init(WriterContext *wctx)
{
FlatContext *flat = wctx->priv;
int i;
if (strlen(flat->sep_str) != 1) {
av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
@ -853,20 +826,9 @@ static av_cold int flat_init(WriterContext *wctx)
}
flat->sep = flat->sep_str[0];
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&flat->section_header[i], 1, AV_BPRINT_SIZE_UNLIMITED);
return 0;
}
static void flat_uninit(WriterContext *wctx)
{
FlatContext *flat = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&flat->section_header[i], NULL);
}
static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
{
const char *p;
@ -903,7 +865,7 @@ static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
static void flat_print_section_header(WriterContext *wctx)
{
FlatContext *flat = wctx->priv;
AVBPrint *buf = &flat->section_header[wctx->level];
AVBPrint *buf = &wctx->section_pbuf[wctx->level];
const struct section *section = wctx->section[wctx->level];
const struct section *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
@ -912,7 +874,7 @@ static void flat_print_section_header(WriterContext *wctx)
av_bprint_clear(buf);
if (!parent_section)
return;
av_bprintf(buf, "%s", flat->section_header[wctx->level-1].str);
av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
if (flat->hierarchical ||
!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
@ -928,8 +890,7 @@ static void flat_print_section_header(WriterContext *wctx)
static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
{
FlatContext *flat = wctx->priv;
printf("%s%s=%lld\n", flat->section_header[wctx->level].str, key, value);
printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
}
static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
@ -937,7 +898,7 @@ static void flat_print_str(WriterContext *wctx, const char *key, const char *val
FlatContext *flat = wctx->priv;
AVBPrint buf;
printf("%s", flat->section_header[wctx->level].str);
printf("%s", wctx->section_pbuf[wctx->level].str);
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
av_bprint_clear(&buf);
@ -949,7 +910,6 @@ static const Writer flat_writer = {
.name = "flat",
.priv_size = sizeof(FlatContext),
.init = flat_init,
.uninit = flat_uninit,
.print_section_header = flat_print_section_header,
.print_integer = flat_print_int,
.print_string = flat_print_str,
@ -962,7 +922,6 @@ static const Writer flat_writer = {
typedef struct {
const AVClass *class;
int hierarchical;
AVBPrint section_header[SECTION_MAX_NB_LEVELS];
} INIContext;
#undef OFFSET
@ -976,25 +935,6 @@ static const AVOption ini_options[] = {
DEFINE_WRITER_CLASS(ini);
static int ini_init(WriterContext *wctx)
{
INIContext *ini = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&ini->section_header[i], 1, AV_BPRINT_SIZE_UNLIMITED);
return 0;
}
static void ini_uninit(WriterContext *wctx)
{
INIContext *ini = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&ini->section_header[i], NULL);
}
static char *ini_escape_str(AVBPrint *dst, const char *src)
{
int i = 0;
@ -1025,7 +965,7 @@ static char *ini_escape_str(AVBPrint *dst, const char *src)
static void ini_print_section_header(WriterContext *wctx)
{
INIContext *ini = wctx->priv;
AVBPrint *buf = &ini->section_header[wctx->level];
AVBPrint *buf = &wctx->section_pbuf[wctx->level];
const struct section *section = wctx->section[wctx->level];
const struct section *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
@ -1039,7 +979,7 @@ static void ini_print_section_header(WriterContext *wctx)
if (wctx->nb_item[wctx->level-1])
printf("\n");
av_bprintf(buf, "%s", ini->section_header[wctx->level-1].str);
av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
if (ini->hierarchical ||
!(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
@ -1074,8 +1014,6 @@ static void ini_print_int(WriterContext *wctx, const char *key, long long int va
static const Writer ini_writer = {
.name = "ini",
.priv_size = sizeof(INIContext),
.init = ini_init,
.uninit = ini_uninit,
.print_section_header = ini_print_section_header,
.print_integer = ini_print_int,
.print_string = ini_print_str,