virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity

avcodec/hevc_parser: remove HEVCContext usage

Browse Source 
This gets rid of the duplicate, limited parser.

Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Reviewed-by: Aaron Levinson <alevinsn@aracnet.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-04-30 16:57:41 -03:00
parent ceb0859066
commit 1c088632e9
2 changed files with 32 additions and 145 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/Makefile
View File

@ -952,7 +952,7 @@ OBJS-$(CONFIG_GSM_PARSER) += gsm_parser.o
OBJS-$(CONFIG_H261_PARSER) += h261_parser.o
OBJS-$(CONFIG_H263_PARSER) += h263_parser.o
OBJS-$(CONFIG_H264_PARSER) += h264_parser.o h264_sei.o h264data.o
OBJS-$(CONFIG_HEVC_PARSER) += hevc_parser.o hevc_data.o
OBJS-$(CONFIG_HEVC_PARSER) += hevc_parser.o hevc_data.o hevc_sei.o
OBJS-$(CONFIG_MJPEG_PARSER) += mjpeg_parser.o
OBJS-$(CONFIG_MLP_PARSER) += mlp_parser.o mlp.o
OBJS-$(CONFIG_MPEG4VIDEO_PARSER) += mpeg4video_parser.o h263.o \

175
libavcodec/hevc_parser.c
View File

@ -24,114 +24,31 @@
#include "golomb.h"
#include "hevc.h"
#include "hevcdec.h"
#include "hevc_ps.h"
#include "hevc_sei.h"
#include "h2645_parse.h"
#include "internal.h"
#include "parser.h"
#define START_CODE 0x000001 ///< start_code_prefix_one_3bytes
#define IS_IRAP_NAL(nal) (nal->type >= 16 && nal->type <= 23)
#define ADVANCED_PARSER CONFIG_HEVC_DECODER
#define IS_IDR_NAL(nal) (nal->type == HEVC_NAL_IDR_W_RADL || nal->type == HEVC_NAL_IDR_N_LP)
typedef struct HEVCParserContext {
ParseContext pc;
H2645Packet pkt;
HEVCParamSets ps;
HEVCSEIContext sei;
SliceHeader sh;
int parsed_extradata;
#if ADVANCED_PARSER
HEVCContext h;
#endif
int poc;
int pocTid0;
} HEVCParserContext;
#if !ADVANCED_PARSER
static int hevc_parse_slice_header(AVCodecParserContext *s, H2645NAL *nal,
AVCodecContext *avctx)
{
HEVCParserContext *ctx = s->priv_data;
GetBitContext *gb = &nal->gb;
HEVCPPS *pps;
HEVCSPS *sps;
unsigned int pps_id;
get_bits1(gb); // first slice in pic
if (IS_IRAP_NAL(nal))
get_bits1(gb); // no output of prior pics
pps_id = get_ue_golomb_long(gb);
if (pps_id >= HEVC_MAX_PPS_COUNT || !ctx->ps.pps_list[pps_id]) {
av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
return AVERROR_INVALIDDATA;
}
pps = (HEVCPPS*)ctx->ps.pps_list[pps_id]->data;
sps = (HEVCSPS*)ctx->ps.sps_list[pps->sps_id]->data;
/* export the stream parameters */
s->coded_width = sps->width;
s->coded_height = sps->height;
s->width = sps->output_width;
s->height = sps->output_height;
s->format = sps->pix_fmt;
avctx->profile = sps->ptl.general_ptl.profile_idc;
avctx->level = sps->ptl.general_ptl.level_idc;
/* ignore the rest for now*/
return 0;
}
static int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
int buf_size, AVCodecContext *avctx)
{
HEVCParserContext *ctx = s->priv_data;
int ret, i;
ret = ff_h2645_packet_split(&ctx->pkt, buf, buf_size, avctx, 0, 0,
AV_CODEC_ID_HEVC, 1);
if (ret < 0)
return ret;
for (i = 0; i < ctx->pkt.nb_nals; i++) {
H2645NAL *nal = &ctx->pkt.nals[i];
/* ignore everything except parameter sets and VCL NALUs */
switch (nal->type) {
case HEVC_NAL_VPS: ff_hevc_decode_nal_vps(&nal->gb, avctx, &ctx->ps); break;
case HEVC_NAL_SPS: ff_hevc_decode_nal_sps(&nal->gb, avctx, &ctx->ps, 1); break;
case HEVC_NAL_PPS: ff_hevc_decode_nal_pps(&nal->gb, avctx, &ctx->ps); break;
case HEVC_NAL_TRAIL_R:
case HEVC_NAL_TRAIL_N:
case HEVC_NAL_TSA_N:
case HEVC_NAL_TSA_R:
case HEVC_NAL_STSA_N:
case HEVC_NAL_STSA_R:
case HEVC_NAL_BLA_W_LP:
case HEVC_NAL_BLA_W_RADL:
case HEVC_NAL_BLA_N_LP:
case HEVC_NAL_IDR_W_RADL:
case HEVC_NAL_IDR_N_LP:
case HEVC_NAL_CRA_NUT:
case HEVC_NAL_RADL_N:
case HEVC_NAL_RADL_R:
case HEVC_NAL_RASL_N:
case HEVC_NAL_RASL_R:
if (buf == avctx->extradata) {
av_log(avctx, AV_LOG_ERROR, "Invalid NAL unit: %d\n", nal->type);
return AVERROR_INVALIDDATA;
}
hevc_parse_slice_header(s, nal, avctx);
break;
}
}
return 0;
}
#endif
/**
* Find the end of the current frame in the bitstream.
* @return the position of the first byte of the next frame, or END_NOT_FOUND
@ -175,7 +92,6 @@ static int hevc_find_frame_end(AVCodecParserContext *s, const uint8_t *buf,
return END_NOT_FOUND;
}
#if ADVANCED_PARSER
/**
* Parse NAL units of found picture and decode some basic information.
*
@ -188,28 +104,17 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
int buf_size, AVCodecContext *avctx)
{
HEVCParserContext *ctx = s->priv_data;
HEVCContext *h = &ctx->h;
GetBitContext *gb;
SliceHeader *sh = &h->sh;
HEVCParamSets *ps = &h->ps;
HEVCSEIContext *sei = &h->sei;
SliceHeader *sh = &ctx->sh;
HEVCParamSets *ps = &ctx->ps;
HEVCSEIContext *sei = &ctx->sei;
int is_global = buf == avctx->extradata;
int i, ret;
if (!h->HEVClc)
h->HEVClc = av_mallocz(sizeof(HEVCLocalContext));
if (!h->HEVClc)
return AVERROR(ENOMEM);
gb = &h->HEVClc->gb;
/* set some sane default values */
s->pict_type = AV_PICTURE_TYPE_I;
s->key_frame = 0;
s->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN;
h->avctx = avctx;
ff_hevc_reset_sei(sei);
ret = ff_h2645_packet_split(&ctx->pkt, buf, buf_size, avctx, 0, 0,
@ -219,13 +124,11 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
for (i = 0; i < ctx->pkt.nb_nals; i++) {
H2645NAL *nal = &ctx->pkt.nals[i];
GetBitContext *gb = &nal->gb;
int num = 0, den = 0;
h->nal_unit_type = nal->type;
h->temporal_id = nal->temporal_id;
*gb = nal->gb;
switch (h->nal_unit_type) {
switch (nal->type) {
case HEVC_NAL_VPS:
ff_hevc_decode_nal_vps(gb, avctx, ps);
break;
@ -237,7 +140,7 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
break;
case HEVC_NAL_SEI_PREFIX:
case HEVC_NAL_SEI_SUFFIX:
ff_hevc_decode_nal_sei(gb, avctx, sei, ps, h->nal_unit_type);
ff_hevc_decode_nal_sei(gb, avctx, sei, ps, nal->type);
break;
case HEVC_NAL_TRAIL_N:
case HEVC_NAL_TRAIL_R:
@ -257,15 +160,15 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
case HEVC_NAL_CRA_NUT:
if (is_global) {
av_log(avctx, AV_LOG_ERROR, "Invalid NAL unit: %d\n", h->nal_unit_type);
av_log(avctx, AV_LOG_ERROR, "Invalid NAL unit: %d\n", nal->type);
return AVERROR_INVALIDDATA;
}
sh->first_slice_in_pic_flag = get_bits1(gb);
s->picture_structure = h->sei.picture_timing.picture_struct;
s->field_order = h->sei.picture_timing.picture_struct;
s->picture_structure = sei->picture_timing.picture_struct;
s->field_order = sei->picture_timing.picture_struct;
if (IS_IRAP(h)) {
if (IS_IRAP_NAL(nal)) {
s->key_frame = 1;
sh->no_output_of_prior_pics_flag = get_bits1(gb);
}
@ -348,31 +251,30 @@ static inline int parse_nal_units(AVCodecParserContext *s, const uint8_t *buf,
if (ps->sps->separate_colour_plane_flag)
sh->colour_plane_id = get_bits(gb, 2);
if (!IS_IDR(h)) {
if (!IS_IDR_NAL(nal)) {
sh->pic_order_cnt_lsb = get_bits(gb, ps->sps->log2_max_poc_lsb);
s->output_picture_number = h->poc = ff_hevc_compute_poc(h->ps.sps, h->pocTid0, sh->pic_order_cnt_lsb, h->nal_unit_type);
s->output_picture_number = ctx->poc = ff_hevc_compute_poc(ps->sps, ctx->pocTid0, sh->pic_order_cnt_lsb, nal->type);
} else
s->output_picture_number = h->poc = 0;
s->output_picture_number = ctx->poc = 0;
if (h->temporal_id == 0 &&
h->nal_unit_type != HEVC_NAL_TRAIL_N &&
h->nal_unit_type != HEVC_NAL_TSA_N &&
h->nal_unit_type != HEVC_NAL_STSA_N &&
h->nal_unit_type != HEVC_NAL_RADL_N &&
h->nal_unit_type != HEVC_NAL_RASL_N &&
h->nal_unit_type != HEVC_NAL_RADL_R &&
h->nal_unit_type != HEVC_NAL_RASL_R)
h->pocTid0 = h->poc;
if (nal->temporal_id == 0 &&
nal->type != HEVC_NAL_TRAIL_N &&
nal->type != HEVC_NAL_TSA_N &&
nal->type != HEVC_NAL_STSA_N &&
nal->type != HEVC_NAL_RADL_N &&
nal->type != HEVC_NAL_RASL_N &&
nal->type != HEVC_NAL_RADL_R &&
nal->type != HEVC_NAL_RASL_R)
ctx->pocTid0 = ctx->poc;
return 0; /* no need to evaluate the rest */
}
}
/* didn't find a picture! */
if (!is_global)
av_log(h->avctx, AV_LOG_ERROR, "missing picture in access unit\n");
av_log(avctx, AV_LOG_ERROR, "missing picture in access unit\n");
return -1;
}
#endif
static int hevc_parse(AVCodecParserContext *s,
AVCodecContext *avctx,
@ -444,21 +346,6 @@ static void hevc_parser_close(AVCodecParserContext *s)
HEVCParserContext *ctx = s->priv_data;
int i;
#if ADVANCED_PARSER
HEVCContext *h = &ctx->h;
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.vps_list); i++)
av_buffer_unref(&h->ps.vps_list[i]);
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.sps_list); i++)
av_buffer_unref(&h->ps.sps_list[i]);
for (i = 0; i < FF_ARRAY_ELEMS(h->ps.pps_list); i++)
av_buffer_unref(&h->ps.pps_list[i]);
h->ps.sps = NULL;
av_freep(&h->HEVClc);
#endif
for (i = 0; i < FF_ARRAY_ELEMS(ctx->ps.vps_list); i++)
av_buffer_unref(&ctx->ps.vps_list[i]);
for (i = 0; i < FF_ARRAY_ELEMS(ctx->ps.sps_list); i++)