| /* |
| * 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 |
| */ |
| |
| #include "libavutil/mem.h" |
| #include "libavutil/refstruct.h" |
| #include "bytestream.h" |
| #include "cbs.h" |
| #include "cbs_internal.h" |
| #include "cbs_h2645.h" |
| #include "cbs_h264.h" |
| #include "cbs_sei.h" |
| #include "get_bits.h" |
| |
| #define HEADER(name) do { \ |
| ff_cbs_trace_header(ctx, name); \ |
| } while (0) |
| |
| #define CHECK(call) do { \ |
| err = (call); \ |
| if (err < 0) \ |
| return err; \ |
| } while (0) |
| |
| #define FUNC_NAME2(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name |
| #define FUNC_NAME1(rw, codec, name) FUNC_NAME2(rw, codec, name) |
| #define FUNC_H264(name) FUNC_NAME1(READWRITE, h264, name) |
| #define FUNC_NAME2_EXPORT(rw, codec, name) ff_cbs_ ## codec ## _ ## rw ## _ ## name |
| #define FUNC_NAME1_EXPORT(rw, codec, name) FUNC_NAME2_EXPORT(rw, codec, name) |
| #define FUNC_SEI(name) FUNC_NAME1_EXPORT(READWRITE, sei, name) |
| |
| #define SEI_FUNC(name, args) \ |
| static int FUNC_H264(name) args; \ |
| static int FUNC_H264(name ## _internal)(CodedBitstreamContext *ctx, \ |
| RWContext *rw, void *cur, \ |
| SEIMessageState *state) \ |
| { \ |
| return FUNC_H264(name)(ctx, rw, cur, state); \ |
| } \ |
| static int FUNC_H264(name) args |
| |
| #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL) |
| |
| #define u(width, name, range_min, range_max) \ |
| xu(width, name, current->name, range_min, range_max, 0, ) |
| #define flag(name) ub(1, name) |
| #define ue(name, range_min, range_max) \ |
| xue(name, current->name, range_min, range_max, 0, ) |
| #define i(width, name, range_min, range_max) \ |
| xi(width, name, current->name, range_min, range_max, 0, ) |
| #define ib(width, name) \ |
| xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), 0, ) |
| #define se(name, range_min, range_max) \ |
| xse(name, current->name, range_min, range_max, 0, ) |
| |
| #define us(width, name, range_min, range_max, subs, ...) \ |
| xu(width, name, current->name, range_min, range_max, subs, __VA_ARGS__) |
| #define ubs(width, name, subs, ...) \ |
| xu(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__) |
| #define flags(name, subs, ...) \ |
| xu(1, name, current->name, 0, 1, subs, __VA_ARGS__) |
| #define ues(name, range_min, range_max, subs, ...) \ |
| xue(name, current->name, range_min, range_max, subs, __VA_ARGS__) |
| #define is(width, name, range_min, range_max, subs, ...) \ |
| xi(width, name, current->name, range_min, range_max, subs, __VA_ARGS__) |
| #define ibs(width, name, subs, ...) \ |
| xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), subs, __VA_ARGS__) |
| #define ses(name, range_min, range_max, subs, ...) \ |
| xse(name, current->name, range_min, range_max, subs, __VA_ARGS__) |
| |
| #define fixed(width, name, value) do { \ |
| av_unused uint32_t fixed_value = value; \ |
| xu(width, name, fixed_value, value, value, 0, ); \ |
| } while (0) |
| |
| |
| #define READ |
| #define READWRITE read |
| #define RWContext GetBitContext |
| |
| #define ub(width, name) do { \ |
| uint32_t value; \ |
| CHECK(ff_cbs_read_simple_unsigned(ctx, rw, width, #name, \ |
| &value)); \ |
| current->name = value; \ |
| } while (0) |
| #define xu(width, name, var, range_min, range_max, subs, ...) do { \ |
| uint32_t value; \ |
| CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| &value, range_min, range_max)); \ |
| var = value; \ |
| } while (0) |
| #define xue(name, var, range_min, range_max, subs, ...) do { \ |
| uint32_t value; \ |
| CHECK(ff_cbs_read_ue_golomb(ctx, rw, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| &value, range_min, range_max)); \ |
| var = value; \ |
| } while (0) |
| #define xi(width, name, var, range_min, range_max, subs, ...) do { \ |
| int32_t value; \ |
| CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| &value, range_min, range_max)); \ |
| var = value; \ |
| } while (0) |
| #define xse(name, var, range_min, range_max, subs, ...) do { \ |
| int32_t value; \ |
| CHECK(ff_cbs_read_se_golomb(ctx, rw, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| &value, range_min, range_max)); \ |
| var = value; \ |
| } while (0) |
| |
| |
| #define infer(name, value) do { \ |
| current->name = value; \ |
| } while (0) |
| |
| #define more_rbsp_data(var) ((var) = ff_cbs_h2645_read_more_rbsp_data(rw)) |
| |
| #define bit_position(rw) (get_bits_count(rw)) |
| #define byte_alignment(rw) (get_bits_count(rw) % 8) |
| |
| #define allocate(name, size) do { \ |
| name ## _ref = av_buffer_allocz(size + \ |
| AV_INPUT_BUFFER_PADDING_SIZE); \ |
| if (!name ## _ref) \ |
| return AVERROR(ENOMEM); \ |
| name = name ## _ref->data; \ |
| } while (0) |
| |
| #define FUNC(name) FUNC_H264(name) |
| #include "cbs_h264_syntax_template.c" |
| #undef FUNC |
| |
| |
| #undef READ |
| #undef READWRITE |
| #undef RWContext |
| #undef ub |
| #undef xu |
| #undef xi |
| #undef xue |
| #undef xse |
| #undef infer |
| #undef more_rbsp_data |
| #undef bit_position |
| #undef byte_alignment |
| #undef allocate |
| #undef allocate_struct |
| |
| |
| #define WRITE |
| #define READWRITE write |
| #define RWContext PutBitContext |
| |
| #define ub(width, name) do { \ |
| uint32_t value = current->name; \ |
| CHECK(ff_cbs_write_simple_unsigned(ctx, rw, width, #name, \ |
| value)); \ |
| } while (0) |
| #define xu(width, name, var, range_min, range_max, subs, ...) do { \ |
| uint32_t value = var; \ |
| CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| value, range_min, range_max)); \ |
| } while (0) |
| #define xue(name, var, range_min, range_max, subs, ...) do { \ |
| uint32_t value = var; \ |
| CHECK(ff_cbs_write_ue_golomb(ctx, rw, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| value, range_min, range_max)); \ |
| } while (0) |
| #define xi(width, name, var, range_min, range_max, subs, ...) do { \ |
| int32_t value = var; \ |
| CHECK(ff_cbs_write_signed(ctx, rw, width, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| value, range_min, range_max)); \ |
| } while (0) |
| #define xse(name, var, range_min, range_max, subs, ...) do { \ |
| int32_t value = var; \ |
| CHECK(ff_cbs_write_se_golomb(ctx, rw, #name, \ |
| SUBSCRIPTS(subs, __VA_ARGS__), \ |
| value, range_min, range_max)); \ |
| } while (0) |
| |
| #define infer(name, value) do { \ |
| if (current->name != (value)) { \ |
| av_log(ctx->log_ctx, AV_LOG_ERROR, \ |
| "%s does not match inferred value: " \ |
| "%"PRId64", but should be %"PRId64".\n", \ |
| #name, (int64_t)current->name, (int64_t)(value)); \ |
| return AVERROR_INVALIDDATA; \ |
| } \ |
| } while (0) |
| |
| #define more_rbsp_data(var) (var) |
| |
| #define bit_position(rw) (put_bits_count(rw)) |
| #define byte_alignment(rw) (put_bits_count(rw) % 8) |
| |
| #define allocate(name, size) do { \ |
| if (!name) { \ |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "%s must be set " \ |
| "for writing.\n", #name); \ |
| return AVERROR_INVALIDDATA; \ |
| } \ |
| } while (0) |
| |
| #define FUNC(name) FUNC_H264(name) |
| #include "cbs_h264_syntax_template.c" |
| #undef FUNC |
| |
| #undef WRITE |
| #undef READWRITE |
| #undef RWContext |
| #undef ub |
| #undef xu |
| #undef xi |
| #undef xue |
| #undef xse |
| #undef u |
| #undef i |
| #undef flag |
| #undef ue |
| #undef se |
| #undef infer |
| #undef more_rbsp_data |
| #undef bit_position |
| #undef byte_alignment |
| #undef allocate |
| |
| |
| |
| static int cbs_h264_split_fragment(CodedBitstreamContext *ctx, |
| CodedBitstreamFragment *frag, |
| int header) |
| { |
| enum AVCodecID codec_id = ctx->codec->codec_id; |
| CodedBitstreamH264Context *priv = ctx->priv_data; |
| CodedBitstreamH2645Context *h2645 = &priv->common; |
| GetByteContext gbc; |
| int err; |
| |
| av_assert0(frag->data && frag->nb_units == 0); |
| if (frag->data_size == 0) |
| return 0; |
| |
| if (header && frag->data[0]) { |
| // AVCC header. |
| size_t size, start, end; |
| int i, count, version; |
| |
| h2645->mp4 = 1; |
| |
| bytestream2_init(&gbc, frag->data, frag->data_size); |
| |
| if (bytestream2_get_bytes_left(&gbc) < 6) |
| return AVERROR_INVALIDDATA; |
| |
| version = bytestream2_get_byte(&gbc); |
| if (version != 1) { |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid AVCC header: " |
| "first byte %u.\n", version); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| bytestream2_skip(&gbc, 3); |
| h2645->nal_length_size = (bytestream2_get_byte(&gbc) & 3) + 1; |
| |
| // SPS array. |
| count = bytestream2_get_byte(&gbc) & 0x1f; |
| start = bytestream2_tell(&gbc); |
| for (i = 0; i < count; i++) { |
| if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i)) |
| return AVERROR_INVALIDDATA; |
| size = bytestream2_get_be16(&gbc); |
| if (bytestream2_get_bytes_left(&gbc) < size) |
| return AVERROR_INVALIDDATA; |
| bytestream2_skip(&gbc, size); |
| } |
| end = bytestream2_tell(&gbc); |
| |
| err = ff_h2645_packet_split(&h2645->read_packet, |
| frag->data + start, end - start, |
| ctx->log_ctx, 2, AV_CODEC_ID_H264, |
| H2645_FLAG_IS_NALFF | H2645_FLAG_SMALL_PADDING | H2645_FLAG_USE_REF); |
| if (err < 0) { |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC SPS array.\n"); |
| return err; |
| } |
| err = ff_cbs_h2645_fragment_add_nals(ctx, frag, &h2645->read_packet); |
| if (err < 0) |
| return err; |
| |
| // PPS array. |
| count = bytestream2_get_byte(&gbc); |
| start = bytestream2_tell(&gbc); |
| for (i = 0; i < count; i++) { |
| if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i)) |
| return AVERROR_INVALIDDATA; |
| size = bytestream2_get_be16(&gbc); |
| if (bytestream2_get_bytes_left(&gbc) < size) |
| return AVERROR_INVALIDDATA; |
| bytestream2_skip(&gbc, size); |
| } |
| end = bytestream2_tell(&gbc); |
| |
| err = ff_h2645_packet_split(&h2645->read_packet, |
| frag->data + start, end - start, |
| ctx->log_ctx, 2, AV_CODEC_ID_H264, |
| H2645_FLAG_IS_NALFF | H2645_FLAG_SMALL_PADDING | H2645_FLAG_USE_REF); |
| if (err < 0) { |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC PPS array.\n"); |
| return err; |
| } |
| err = ff_cbs_h2645_fragment_add_nals(ctx, frag, &h2645->read_packet); |
| if (err < 0) |
| return err; |
| |
| if (bytestream2_get_bytes_left(&gbc) > 0) { |
| av_log(ctx->log_ctx, AV_LOG_WARNING, "%u bytes left at end of AVCC " |
| "header.\n", bytestream2_get_bytes_left(&gbc)); |
| } |
| } else { |
| int flags = (H2645_FLAG_IS_NALFF * !!h2645->mp4) | H2645_FLAG_SMALL_PADDING | H2645_FLAG_USE_REF; |
| // Annex B, or later MP4 with already-known parameters. |
| |
| err = ff_h2645_packet_split(&h2645->read_packet, |
| frag->data, frag->data_size, |
| ctx->log_ctx, |
| h2645->nal_length_size, |
| codec_id, flags); |
| if (err < 0) |
| return err; |
| |
| err = ff_cbs_h2645_fragment_add_nals(ctx, frag, &h2645->read_packet); |
| if (err < 0) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| #define cbs_h2645_replace_ps(ps_name, ps_var, id_element) \ |
| static int cbs_h264_replace_ ## ps_var(CodedBitstreamContext *ctx, \ |
| CodedBitstreamUnit *unit) \ |
| { \ |
| CodedBitstreamH264Context *priv = ctx->priv_data; \ |
| H264Raw ## ps_name *ps_var = unit->content; \ |
| unsigned int id = ps_var->id_element; \ |
| int err = ff_cbs_make_unit_refcounted(ctx, unit); \ |
| if (err < 0) \ |
| return err; \ |
| if (priv->ps_var[id] == priv->active_ ## ps_var) \ |
| priv->active_ ## ps_var = NULL ; \ |
| av_assert0(unit->content_ref); \ |
| av_refstruct_replace(&priv->ps_var[id], unit->content_ref); \ |
| return 0; \ |
| } |
| |
| cbs_h2645_replace_ps(SPS, sps, seq_parameter_set_id) |
| cbs_h2645_replace_ps(PPS, pps, pic_parameter_set_id) |
| |
| static int cbs_h264_read_nal_unit(CodedBitstreamContext *ctx, |
| CodedBitstreamUnit *unit) |
| { |
| GetBitContext gbc; |
| int err; |
| |
| err = init_get_bits(&gbc, unit->data, 8 * unit->data_size); |
| if (err < 0) |
| return err; |
| |
| err = ff_cbs_alloc_unit_content(ctx, unit); |
| if (err < 0) |
| return err; |
| |
| switch (unit->type) { |
| case H264_NAL_SPS: |
| { |
| H264RawSPS *sps = unit->content; |
| |
| err = cbs_h264_read_sps(ctx, &gbc, sps); |
| if (err < 0) |
| return err; |
| |
| err = cbs_h264_replace_sps(ctx, unit); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SPS_EXT: |
| { |
| err = cbs_h264_read_sps_extension(ctx, &gbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_PPS: |
| { |
| H264RawPPS *pps = unit->content; |
| |
| err = cbs_h264_read_pps(ctx, &gbc, pps); |
| if (err < 0) |
| return err; |
| |
| err = cbs_h264_replace_pps(ctx, unit); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SLICE: |
| case H264_NAL_IDR_SLICE: |
| case H264_NAL_AUXILIARY_SLICE: |
| { |
| H264RawSlice *slice = unit->content; |
| int pos, len; |
| |
| err = cbs_h264_read_slice_header(ctx, &gbc, &slice->header); |
| if (err < 0) |
| return err; |
| |
| if (!ff_cbs_h2645_read_more_rbsp_data(&gbc)) |
| return AVERROR_INVALIDDATA; |
| |
| pos = get_bits_count(&gbc); |
| len = unit->data_size; |
| |
| slice->data_size = len - pos / 8; |
| slice->data_ref = av_buffer_ref(unit->data_ref); |
| if (!slice->data_ref) |
| return AVERROR(ENOMEM); |
| slice->data = unit->data + pos / 8; |
| slice->data_bit_start = pos % 8; |
| } |
| break; |
| |
| case H264_NAL_AUD: |
| { |
| err = cbs_h264_read_aud(ctx, &gbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SEI: |
| { |
| err = cbs_h264_read_sei(ctx, &gbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_FILLER_DATA: |
| { |
| err = cbs_h264_read_filler(ctx, &gbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_END_SEQUENCE: |
| case H264_NAL_END_STREAM: |
| { |
| err = (unit->type == H264_NAL_END_SEQUENCE ? |
| cbs_h264_read_end_of_sequence : |
| cbs_h264_read_end_of_stream)(ctx, &gbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| default: |
| return AVERROR(ENOSYS); |
| } |
| |
| return 0; |
| } |
| |
| static int cbs_h264_write_nal_unit(CodedBitstreamContext *ctx, |
| CodedBitstreamUnit *unit, |
| PutBitContext *pbc) |
| { |
| int err; |
| |
| switch (unit->type) { |
| case H264_NAL_SPS: |
| { |
| H264RawSPS *sps = unit->content; |
| |
| err = cbs_h264_write_sps(ctx, pbc, sps); |
| if (err < 0) |
| return err; |
| |
| err = cbs_h264_replace_sps(ctx, unit); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SPS_EXT: |
| { |
| H264RawSPSExtension *sps_ext = unit->content; |
| |
| err = cbs_h264_write_sps_extension(ctx, pbc, sps_ext); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_PPS: |
| { |
| H264RawPPS *pps = unit->content; |
| |
| err = cbs_h264_write_pps(ctx, pbc, pps); |
| if (err < 0) |
| return err; |
| |
| err = cbs_h264_replace_pps(ctx, unit); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SLICE: |
| case H264_NAL_IDR_SLICE: |
| case H264_NAL_AUXILIARY_SLICE: |
| { |
| H264RawSlice *slice = unit->content; |
| |
| err = cbs_h264_write_slice_header(ctx, pbc, &slice->header); |
| if (err < 0) |
| return err; |
| |
| if (slice->data) { |
| err = ff_cbs_h2645_write_slice_data(ctx, pbc, slice->data, |
| slice->data_size, |
| slice->data_bit_start); |
| if (err < 0) |
| return err; |
| } else { |
| // No slice data - that was just the header. |
| // (Bitstream may be unaligned!) |
| } |
| } |
| break; |
| |
| case H264_NAL_AUD: |
| { |
| err = cbs_h264_write_aud(ctx, pbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_SEI: |
| { |
| err = cbs_h264_write_sei(ctx, pbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_FILLER_DATA: |
| { |
| err = cbs_h264_write_filler(ctx, pbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_END_SEQUENCE: |
| { |
| err = cbs_h264_write_end_of_sequence(ctx, pbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| case H264_NAL_END_STREAM: |
| { |
| err = cbs_h264_write_end_of_stream(ctx, pbc, unit->content); |
| if (err < 0) |
| return err; |
| } |
| break; |
| |
| default: |
| av_log(ctx->log_ctx, AV_LOG_ERROR, "Write unimplemented for " |
| "NAL unit type %"PRIu32".\n", unit->type); |
| return AVERROR_PATCHWELCOME; |
| } |
| |
| return 0; |
| } |
| |
| static int cbs_h264_discarded_nal_unit(CodedBitstreamContext *ctx, |
| const CodedBitstreamUnit *unit, |
| enum AVDiscard skip) |
| { |
| H264RawNALUnitHeader *header; |
| H264RawSliceHeader *slice; |
| int slice_type_i, slice_type_b, slice_type_si; |
| |
| if (skip <= AVDISCARD_DEFAULT) |
| return 0; |
| |
| // keep non-VCL |
| if (unit->type != H264_NAL_SLICE && |
| unit->type != H264_NAL_IDR_SLICE && |
| unit->type != H264_NAL_AUXILIARY_SLICE) |
| return 0; |
| |
| if (skip >= AVDISCARD_ALL) |
| return 1; |
| |
| if (skip >= AVDISCARD_NONKEY && unit->type != H264_NAL_IDR_SLICE) |
| return 1; |
| |
| header = (H264RawNALUnitHeader *)unit->content; |
| if (!header) { |
| av_log(ctx->log_ctx, AV_LOG_WARNING, |
| "h264 nal unit header is null, missing decompose?\n"); |
| return 0; |
| } |
| |
| if (skip >= AVDISCARD_NONREF && !header->nal_ref_idc) |
| return 1; |
| |
| slice = (H264RawSliceHeader *)unit->content; |
| if (!slice) { |
| av_log(ctx->log_ctx, AV_LOG_WARNING, |
| "h264 slice header is null, missing decompose?\n"); |
| return 0; |
| } |
| |
| slice_type_i = slice->slice_type % 5 == 2; |
| slice_type_b = slice->slice_type % 5 == 1; |
| slice_type_si = slice->slice_type % 5 == 4; |
| |
| if (skip >= AVDISCARD_BIDIR && slice_type_b) |
| return 1; |
| if (skip >= AVDISCARD_NONINTRA && !slice_type_i && !slice_type_si) |
| return 1; |
| |
| return 0; |
| } |
| |
| static av_cold void cbs_h264_flush(CodedBitstreamContext *ctx) |
| { |
| CodedBitstreamH264Context *h264 = ctx->priv_data; |
| |
| for (int i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++) |
| av_refstruct_unref(&h264->sps[i]); |
| for (int i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++) |
| av_refstruct_unref(&h264->pps[i]); |
| |
| h264->active_sps = NULL; |
| h264->active_pps = NULL; |
| h264->last_slice_nal_unit_type = 0; |
| } |
| |
| static av_cold void cbs_h264_close(CodedBitstreamContext *ctx) |
| { |
| CodedBitstreamH264Context *h264 = ctx->priv_data; |
| int i; |
| |
| ff_h2645_packet_uninit(&h264->common.read_packet); |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++) |
| av_refstruct_unref(&h264->sps[i]); |
| for (i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++) |
| av_refstruct_unref(&h264->pps[i]); |
| } |
| |
| static void cbs_h264_free_sei(AVRefStructOpaque unused, void *content) |
| { |
| H264RawSEI *sei = content; |
| ff_cbs_sei_free_message_list(&sei->message_list); |
| } |
| |
| static CodedBitstreamUnitTypeDescriptor cbs_h264_unit_types[] = { |
| CBS_UNIT_TYPE_POD(H264_NAL_SPS, H264RawSPS), |
| CBS_UNIT_TYPE_POD(H264_NAL_SPS_EXT, H264RawSPSExtension), |
| |
| CBS_UNIT_TYPE_INTERNAL_REF(H264_NAL_PPS, H264RawPPS, slice_group_id), |
| |
| CBS_UNIT_TYPES_INTERNAL_REF((H264_NAL_IDR_SLICE, |
| H264_NAL_SLICE, |
| H264_NAL_AUXILIARY_SLICE), H264RawSlice, data), |
| |
| CBS_UNIT_TYPE_POD(H264_NAL_AUD, H264RawAUD), |
| CBS_UNIT_TYPE_POD(H264_NAL_FILLER_DATA, H264RawFiller), |
| CBS_UNIT_TYPE_POD(H264_NAL_END_SEQUENCE, H264RawNALUnitHeader), |
| CBS_UNIT_TYPE_POD(H264_NAL_END_STREAM, H264RawNALUnitHeader), |
| |
| CBS_UNIT_TYPE_COMPLEX(H264_NAL_SEI, H264RawSEI, &cbs_h264_free_sei), |
| |
| CBS_UNIT_TYPE_END_OF_LIST |
| }; |
| |
| const CodedBitstreamType ff_cbs_type_h264 = { |
| .codec_id = AV_CODEC_ID_H264, |
| |
| .priv_data_size = sizeof(CodedBitstreamH264Context), |
| |
| .unit_types = cbs_h264_unit_types, |
| |
| .split_fragment = &cbs_h264_split_fragment, |
| .read_unit = &cbs_h264_read_nal_unit, |
| .write_unit = &cbs_h264_write_nal_unit, |
| .discarded_unit = &cbs_h264_discarded_nal_unit, |
| .assemble_fragment = &ff_cbs_h2645_assemble_fragment, |
| |
| .flush = &cbs_h264_flush, |
| .close = &cbs_h264_close, |
| }; |
| |
| // Macro for the read/write pair. |
| #define SEI_MESSAGE_RW(codec, name) \ |
| .read = cbs_ ## codec ## _read_ ## name ## _internal, \ |
| .write = cbs_ ## codec ## _write_ ## name ## _internal |
| |
| const SEIMessageTypeDescriptor ff_cbs_sei_h264_types[] = { |
| { |
| SEI_TYPE_BUFFERING_PERIOD, |
| 1, 0, |
| sizeof(H264RawSEIBufferingPeriod), |
| SEI_MESSAGE_RW(h264, sei_buffering_period), |
| }, |
| { |
| SEI_TYPE_PIC_TIMING, |
| 1, 0, |
| sizeof(H264RawSEIPicTiming), |
| SEI_MESSAGE_RW(h264, sei_pic_timing), |
| }, |
| { |
| SEI_TYPE_PAN_SCAN_RECT, |
| 1, 0, |
| sizeof(H264RawSEIPanScanRect), |
| SEI_MESSAGE_RW(h264, sei_pan_scan_rect), |
| }, |
| { |
| SEI_TYPE_RECOVERY_POINT, |
| 1, 0, |
| sizeof(H264RawSEIRecoveryPoint), |
| SEI_MESSAGE_RW(h264, sei_recovery_point), |
| }, |
| { |
| SEI_TYPE_FILM_GRAIN_CHARACTERISTICS, |
| 1, 0, |
| sizeof(H264RawFilmGrainCharacteristics), |
| SEI_MESSAGE_RW(h264, film_grain_characteristics), |
| }, |
| { |
| SEI_TYPE_FRAME_PACKING_ARRANGEMENT, |
| 1, 0, |
| sizeof(H264RawSEIFramePackingArrangement), |
| SEI_MESSAGE_RW(h264, sei_frame_packing_arrangement), |
| }, |
| { |
| SEI_TYPE_DISPLAY_ORIENTATION, |
| 1, 0, |
| sizeof(H264RawSEIDisplayOrientation), |
| SEI_MESSAGE_RW(h264, sei_display_orientation), |
| }, |
| SEI_MESSAGE_TYPE_END |
| }; |
