#include "libavutil/avassert.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
-#include "libavutil/thread.h"
#include "internal.h"
#include "parser.h"
-/* Parsers */
-extern AVCodecParser ff_aac_parser;
-extern AVCodecParser ff_aac_latm_parser;
-extern AVCodecParser ff_ac3_parser;
-extern AVCodecParser ff_adx_parser;
-extern AVCodecParser ff_bmp_parser;
-extern AVCodecParser ff_cavsvideo_parser;
-extern AVCodecParser ff_cook_parser;
-extern AVCodecParser ff_dca_parser;
-extern AVCodecParser ff_dirac_parser;
-extern AVCodecParser ff_dnxhd_parser;
-extern AVCodecParser ff_dpx_parser;
-extern AVCodecParser ff_dvaudio_parser;
-extern AVCodecParser ff_dvbsub_parser;
-extern AVCodecParser ff_dvdsub_parser;
-extern AVCodecParser ff_dvd_nav_parser;
-extern AVCodecParser ff_flac_parser;
-extern AVCodecParser ff_g729_parser;
-extern AVCodecParser ff_gsm_parser;
-extern AVCodecParser ff_h261_parser;
-extern AVCodecParser ff_h263_parser;
-extern AVCodecParser ff_h264_parser;
-extern AVCodecParser ff_hevc_parser;
-extern AVCodecParser ff_mjpeg_parser;
-extern AVCodecParser ff_mlp_parser;
-extern AVCodecParser ff_mpeg4video_parser;
-extern AVCodecParser ff_mpegaudio_parser;
-extern AVCodecParser ff_mpegvideo_parser;
-extern AVCodecParser ff_opus_parser;
-extern AVCodecParser ff_png_parser;
-extern AVCodecParser ff_pnm_parser;
-extern AVCodecParser ff_rv30_parser;
-extern AVCodecParser ff_rv40_parser;
-extern AVCodecParser ff_sipr_parser;
-extern AVCodecParser ff_tak_parser;
-extern AVCodecParser ff_vc1_parser;
-extern AVCodecParser ff_vorbis_parser;
-extern AVCodecParser ff_vp3_parser;
-extern AVCodecParser ff_vp8_parser;
-extern AVCodecParser ff_vp9_parser;
-extern AVCodecParser ff_xma_parser;
-
-#include "libavcodec/parser_list.c"
-
-static AVOnce av_parser_next_init = AV_ONCE_INIT;
-
-static void av_parser_init_next(void)
-{
- AVCodecParser *prev = NULL, *p;
- int i = 0;
- while ((p = (AVCodecParser*)parser_list[i++])) {
- if (prev)
- prev->next = p;
- prev = p;
- }
-}
-
-AVCodecParser *av_parser_next(const AVCodecParser *p)
-{
- ff_thread_once(&av_parser_next_init, av_parser_init_next);
-
- if (p)
- return p->next;
- else
- return (AVCodecParser*)parser_list[0];
-}
-
-const AVCodecParser *av_parser_iterate(void **opaque)
-{
- uintptr_t i = (uintptr_t)*opaque;
- const AVCodecParser *p = parser_list[i];
-
- if (p)
- *opaque = (void*)(i + 1);
-
- return p;
-}
-
-void av_register_codec_parser(AVCodecParser *parser)
-{
- ff_thread_once(&av_parser_next_init, av_parser_init_next);
-}
-
AVCodecParserContext *av_parser_init(int codec_id)
{
AVCodecParserContext *s = NULL;
s = av_mallocz(sizeof(AVCodecParserContext));
if (!s)
goto err_out;
- s->parser = (AVCodecParser*)parser;
+ s->parser = parser;
s->priv_data = av_mallocz(parser->priv_data_size);
if (!s->priv_data)
goto err_out;
goto err_out;
}
s->key_frame = -1;
-#if FF_API_CONVERGENCE_DURATION
-FF_DISABLE_DEPRECATION_WARNINGS
- s->convergence_duration = 0;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
s->dts_sync_point = INT_MIN;
s->dts_ref_dts_delta = INT_MIN;
s->pts_dts_delta = INT_MIN;
/* offset of the next frame */
s->next_frame_offset = s->cur_offset + index;
s->fetch_timestamp = 1;
+ } else {
+ /* Don't return a pointer to dummy_buf. */
+ *poutbuf = NULL;
}
if (index < 0)
index = 0;
return index;
}
-int av_parser_change(AVCodecParserContext *s, AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
- const uint8_t *buf, int buf_size, int keyframe)
-{
- if (s && s->parser->split) {
- if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER ||
- avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER) {
- int i = s->parser->split(avctx, buf, buf_size);
- buf += i;
- buf_size -= i;
- }
- }
-
- /* cast to avoid warning about discarding qualifiers */
- *poutbuf = (uint8_t *) buf;
- *poutbuf_size = buf_size;
- if (avctx->extradata) {
- if (keyframe && (avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER)) {
- int size = buf_size + avctx->extradata_size;
-
- *poutbuf_size = size;
- *poutbuf = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
- if (!*poutbuf)
- return AVERROR(ENOMEM);
-
- memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
- memcpy(*poutbuf + avctx->extradata_size, buf,
- buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
- return 1;
- }
- }
-
- return 0;
-}
-
void av_parser_close(AVCodecParserContext *s)
{
if (s) {
for (; pc->overread > 0; pc->overread--)
pc->buffer[pc->index++] = pc->buffer[pc->overread_index++];
+ if (next > *buf_size)
+ return AVERROR(EINVAL);
+
/* flush remaining if EOF */
if (!*buf_size && next == END_NOT_FOUND)
next = 0;
*buf = pc->buffer;
}
+ if (next < -8) {
+ pc->overread += -8 - next;
+ next = -8;
+ }
/* store overread bytes */
for (; next < 0; next++) {
pc->state = pc->state << 8 | pc->buffer[pc->last_index + next];
av_freep(&pc->buffer);
}
-
-int ff_mpeg4video_split(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
-{
- uint32_t state = -1;
- const uint8_t *ptr = buf, *end = buf + buf_size;
-
- while (ptr < end) {
- ptr = avpriv_find_start_code(ptr, end, &state);
- if (state == 0x1B3 || state == 0x1B6)
- return ptr - 4 - buf;
- }
-
- return 0;
-}