#define MB_TYPE_B_VLC_BITS 4
#define STUDIO_INTRA_BITS 9
-static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb);
-
static VLC dc_lum, dc_chrom;
static VLC sprite_trajectory;
static VLC mb_type_b_vlc;
if (w <= 0 || h <= 0)
return AVERROR_INVALIDDATA;
- /* the decoder was not properly initialized and we cannot continue */
- if (sprite_trajectory.table == NULL)
- return AVERROR_INVALIDDATA;
-
for (i = 0; i < ctx->num_sprite_warping_points; i++) {
int length;
int x = 0, y = 0;
}
}
+static int read_quant_matrix_ext(MpegEncContext *s, GetBitContext *gb)
+{
+ int i, j, v;
+
+ if (get_bits1(gb)) {
+ if (get_bits_left(gb) < 64*8)
+ return AVERROR_INVALIDDATA;
+ /* intra_quantiser_matrix */
+ for (i = 0; i < 64; i++) {
+ v = get_bits(gb, 8);
+ j = s->idsp.idct_permutation[ff_zigzag_direct[i]];
+ s->intra_matrix[j] = v;
+ s->chroma_intra_matrix[j] = v;
+ }
+ }
+
+ if (get_bits1(gb)) {
+ if (get_bits_left(gb) < 64*8)
+ return AVERROR_INVALIDDATA;
+ /* non_intra_quantiser_matrix */
+ for (i = 0; i < 64; i++) {
+ get_bits(gb, 8);
+ }
+ }
+
+ if (get_bits1(gb)) {
+ if (get_bits_left(gb) < 64*8)
+ return AVERROR_INVALIDDATA;
+ /* chroma_intra_quantiser_matrix */
+ for (i = 0; i < 64; i++) {
+ v = get_bits(gb, 8);
+ j = s->idsp.idct_permutation[ff_zigzag_direct[i]];
+ s->chroma_intra_matrix[j] = v;
+ }
+ }
+
+ if (get_bits1(gb)) {
+ if (get_bits_left(gb) < 64*8)
+ return AVERROR_INVALIDDATA;
+ /* chroma_non_intra_quantiser_matrix */
+ for (i = 0; i < 64; i++) {
+ get_bits(gb, 8);
+ }
+ }
+
+ next_start_code_studio(gb);
+ return 0;
+}
+
+static void extension_and_user_data(MpegEncContext *s, GetBitContext *gb, int id)
+{
+ uint32_t startcode;
+ uint8_t extension_type;
+
+ startcode = show_bits_long(gb, 32);
+ if (startcode == USER_DATA_STARTCODE || startcode == EXT_STARTCODE) {
+
+ if ((id == 2 || id == 4) && startcode == EXT_STARTCODE) {
+ skip_bits_long(gb, 32);
+ extension_type = get_bits(gb, 4);
+ if (extension_type == QUANT_MATRIX_EXT_ID)
+ read_quant_matrix_ext(s, gb);
+ }
+ }
+}
+
+static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
+{
+ MpegEncContext *s = &ctx->m;
+ int width, height;
+ int bits_per_raw_sample;
+ int rgb, chroma_format;
+
+ // random_accessible_vol and video_object_type_indication have already
+ // been read by the caller decode_vol_header()
+ skip_bits(gb, 4); /* video_object_layer_verid */
+ ctx->shape = get_bits(gb, 2); /* video_object_layer_shape */
+ skip_bits(gb, 4); /* video_object_layer_shape_extension */
+ skip_bits1(gb); /* progressive_sequence */
+ if (ctx->shape != RECT_SHAPE) {
+ avpriv_request_sample(s->avctx, "MPEG-4 Studio profile non rectangular shape");
+ return AVERROR_PATCHWELCOME;
+ }
+ if (ctx->shape != BIN_ONLY_SHAPE) {
+ rgb = get_bits1(gb); /* rgb_components */
+ chroma_format = get_bits(gb, 2); /* chroma_format */
+ if (!chroma_format || chroma_format == CHROMA_420 || (rgb && chroma_format == CHROMA_422)) {
+ av_log(s->avctx, AV_LOG_ERROR, "illegal chroma format\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ bits_per_raw_sample = get_bits(gb, 4); /* bit_depth */
+ if (bits_per_raw_sample == 10) {
+ if (rgb) {
+ s->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
+ } else {
+ s->avctx->pix_fmt = chroma_format == CHROMA_422 ? AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV444P10;
+ }
+ } else {
+ avpriv_request_sample(s->avctx, "MPEG-4 Studio profile bit-depth %u", bits_per_raw_sample);
+ return AVERROR_PATCHWELCOME;
+ }
+ if (rgb != ctx->rgb || s->chroma_format != chroma_format)
+ s->context_reinit = 1;
+ s->avctx->bits_per_raw_sample = bits_per_raw_sample;
+ ctx->rgb = rgb;
+ s->chroma_format = chroma_format;
+ }
+ if (ctx->shape == RECT_SHAPE) {
+ check_marker(s->avctx, gb, "before video_object_layer_width");
+ width = get_bits(gb, 14); /* video_object_layer_width */
+ check_marker(s->avctx, gb, "before video_object_layer_height");
+ height = get_bits(gb, 14); /* video_object_layer_height */
+ check_marker(s->avctx, gb, "after video_object_layer_height");
+
+ /* Do the same check as non-studio profile */
+ if (width && height) {
+ if (s->width && s->height &&
+ (s->width != width || s->height != height))
+ s->context_reinit = 1;
+ s->width = width;
+ s->height = height;
+ }
+ }
+ s->aspect_ratio_info = get_bits(gb, 4);
+ if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
+ s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width
+ s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height
+ } else {
+ s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[s->aspect_ratio_info];
+ }
+ skip_bits(gb, 4); /* frame_rate_code */
+ skip_bits(gb, 15); /* first_half_bit_rate */
+ check_marker(s->avctx, gb, "after first_half_bit_rate");
+ skip_bits(gb, 15); /* latter_half_bit_rate */
+ check_marker(s->avctx, gb, "after latter_half_bit_rate");
+ skip_bits(gb, 15); /* first_half_vbv_buffer_size */
+ check_marker(s->avctx, gb, "after first_half_vbv_buffer_size");
+ skip_bits(gb, 3); /* latter_half_vbv_buffer_size */
+ skip_bits(gb, 11); /* first_half_vbv_buffer_size */
+ check_marker(s->avctx, gb, "after first_half_vbv_buffer_size");
+ skip_bits(gb, 15); /* latter_half_vbv_occupancy */
+ check_marker(s->avctx, gb, "after latter_half_vbv_occupancy");
+ s->low_delay = get_bits1(gb);
+ s->mpeg_quant = get_bits1(gb); /* mpeg2_stream */
+
+ next_start_code_studio(gb);
+ extension_and_user_data(s, gb, 2);
+
+ return 0;
+}
+
static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
{
MpegEncContext *s = &ctx->m;
return 0;
}
-static int read_quant_matrix_ext(MpegEncContext *s, GetBitContext *gb)
-{
- int i, j, v;
-
- if (get_bits1(gb)) {
- if (get_bits_left(gb) < 64*8)
- return AVERROR_INVALIDDATA;
- /* intra_quantiser_matrix */
- for (i = 0; i < 64; i++) {
- v = get_bits(gb, 8);
- j = s->idsp.idct_permutation[ff_zigzag_direct[i]];
- s->intra_matrix[j] = v;
- s->chroma_intra_matrix[j] = v;
- }
- }
-
- if (get_bits1(gb)) {
- if (get_bits_left(gb) < 64*8)
- return AVERROR_INVALIDDATA;
- /* non_intra_quantiser_matrix */
- for (i = 0; i < 64; i++) {
- get_bits(gb, 8);
- }
- }
-
- if (get_bits1(gb)) {
- if (get_bits_left(gb) < 64*8)
- return AVERROR_INVALIDDATA;
- /* chroma_intra_quantiser_matrix */
- for (i = 0; i < 64; i++) {
- v = get_bits(gb, 8);
- j = s->idsp.idct_permutation[ff_zigzag_direct[i]];
- s->chroma_intra_matrix[j] = v;
- }
- }
-
- if (get_bits1(gb)) {
- if (get_bits_left(gb) < 64*8)
- return AVERROR_INVALIDDATA;
- /* chroma_non_intra_quantiser_matrix */
- for (i = 0; i < 64; i++) {
- get_bits(gb, 8);
- }
- }
-
- next_start_code_studio(gb);
- return 0;
-}
-
-static void extension_and_user_data(MpegEncContext *s, GetBitContext *gb, int id)
-{
- uint32_t startcode;
- uint8_t extension_type;
-
- startcode = show_bits_long(gb, 32);
- if (startcode == USER_DATA_STARTCODE || startcode == EXT_STARTCODE) {
-
- if ((id == 2 || id == 4) && startcode == EXT_STARTCODE) {
- skip_bits_long(gb, 32);
- extension_type = get_bits(gb, 4);
- if (extension_type == QUANT_MATRIX_EXT_ID)
- read_quant_matrix_ext(s, gb);
- }
- }
-}
-
static void decode_smpte_tc(Mpeg4DecContext *ctx, GetBitContext *gb)
{
MpegEncContext *s = &ctx->m;
MpegEncContext *s = &ctx->m;
int visual_object_type;
- skip_bits(gb, 4); /* visual_object_verid */
- visual_object_type = get_bits(gb, 4);
- if (visual_object_type != VOT_VIDEO_ID) {
- avpriv_request_sample(s->avctx, "VO type %u", visual_object_type);
- return AVERROR_PATCHWELCOME;
- }
-
- next_start_code_studio(gb);
- extension_and_user_data(s, gb, 1);
-
- return 0;
-}
-
-static int decode_studio_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
-{
- MpegEncContext *s = &ctx->m;
- int width, height;
- int bits_per_raw_sample;
- int rgb, chroma_format;
-
- // random_accessible_vol and video_object_type_indication have already
- // been read by the caller decode_vol_header()
- skip_bits(gb, 4); /* video_object_layer_verid */
- ctx->shape = get_bits(gb, 2); /* video_object_layer_shape */
- skip_bits(gb, 4); /* video_object_layer_shape_extension */
- skip_bits1(gb); /* progressive_sequence */
- if (ctx->shape != RECT_SHAPE) {
- avpriv_request_sample(s->avctx, "MPEG-4 Studio profile non rectangular shape");
- return AVERROR_PATCHWELCOME;
- }
- if (ctx->shape != BIN_ONLY_SHAPE) {
- rgb = get_bits1(gb); /* rgb_components */
- chroma_format = get_bits(gb, 2); /* chroma_format */
- if (!chroma_format || chroma_format == CHROMA_420 || (rgb && chroma_format == CHROMA_422)) {
- av_log(s->avctx, AV_LOG_ERROR, "illegal chroma format\n");
- return AVERROR_INVALIDDATA;
- }
-
- bits_per_raw_sample = get_bits(gb, 4); /* bit_depth */
- if (bits_per_raw_sample == 10) {
- if (rgb) {
- s->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
- }
- else {
- s->avctx->pix_fmt = chroma_format == CHROMA_422 ? AV_PIX_FMT_YUV422P10 : AV_PIX_FMT_YUV444P10;
- }
- }
- else {
- avpriv_request_sample(s->avctx, "MPEG-4 Studio profile bit-depth %u", bits_per_raw_sample);
- return AVERROR_PATCHWELCOME;
- }
- if (rgb != ctx->rgb || s->chroma_format != chroma_format)
- s->context_reinit = 1;
- s->avctx->bits_per_raw_sample = bits_per_raw_sample;
- ctx->rgb = rgb;
- s->chroma_format = chroma_format;
- }
- if (ctx->shape == RECT_SHAPE) {
- check_marker(s->avctx, gb, "before video_object_layer_width");
- width = get_bits(gb, 14); /* video_object_layer_width */
- check_marker(s->avctx, gb, "before video_object_layer_height");
- height = get_bits(gb, 14); /* video_object_layer_height */
- check_marker(s->avctx, gb, "after video_object_layer_height");
-
- /* Do the same check as non-studio profile */
- if (width && height) {
- if (s->width && s->height &&
- (s->width != width || s->height != height))
- s->context_reinit = 1;
- s->width = width;
- s->height = height;
- }
- }
- s->aspect_ratio_info = get_bits(gb, 4);
- if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
- s->avctx->sample_aspect_ratio.num = get_bits(gb, 8); // par_width
- s->avctx->sample_aspect_ratio.den = get_bits(gb, 8); // par_height
- } else {
- s->avctx->sample_aspect_ratio = ff_h263_pixel_aspect[s->aspect_ratio_info];
- }
- skip_bits(gb, 4); /* frame_rate_code */
- skip_bits(gb, 15); /* first_half_bit_rate */
- check_marker(s->avctx, gb, "after first_half_bit_rate");
- skip_bits(gb, 15); /* latter_half_bit_rate */
- check_marker(s->avctx, gb, "after latter_half_bit_rate");
- skip_bits(gb, 15); /* first_half_vbv_buffer_size */
- check_marker(s->avctx, gb, "after first_half_vbv_buffer_size");
- skip_bits(gb, 3); /* latter_half_vbv_buffer_size */
- skip_bits(gb, 11); /* first_half_vbv_buffer_size */
- check_marker(s->avctx, gb, "after first_half_vbv_buffer_size");
- skip_bits(gb, 15); /* latter_half_vbv_occupancy */
- check_marker(s->avctx, gb, "after latter_half_vbv_occupancy");
- s->low_delay = get_bits1(gb);
- s->mpeg_quant = get_bits1(gb); /* mpeg2_stream */
+ skip_bits(gb, 4); /* visual_object_verid */
+ visual_object_type = get_bits(gb, 4);
+ if (visual_object_type != VOT_VIDEO_ID) {
+ avpriv_request_sample(s->avctx, "VO type %u", visual_object_type);
+ return AVERROR_PATCHWELCOME;
+ }
- next_start_code_studio(gb);
- extension_and_user_data(s, gb, 2);
+ next_start_code_studio(gb);
+ extension_and_user_data(s, gb, 1);
return 0;
}
static int done = 0;
if (!done) {
- ff_rl_init(&ff_mpeg4_rl_intra, ff_mpeg4_static_rl_table_store[0]);
- ff_rl_init(&ff_rvlc_rl_inter, ff_mpeg4_static_rl_table_store[1]);
- ff_rl_init(&ff_rvlc_rl_intra, ff_mpeg4_static_rl_table_store[2]);
+ static uint8_t mpeg4_rvlc_rl_tables[2][2][2 * MAX_RUN + MAX_LEVEL + 3];
+
+ ff_mpeg4_init_rl_intra();
+ ff_rl_init(&ff_rvlc_rl_inter, mpeg4_rvlc_rl_tables[0]);
+ ff_rl_init(&ff_rvlc_rl_intra, mpeg4_rvlc_rl_tables[1]);
INIT_FIRST_VLC_RL(ff_mpeg4_rl_intra, 554);
INIT_VLC_RL(ff_rvlc_rl_inter, 1072);
INIT_FIRST_VLC_RL(ff_rvlc_rl_intra, 1072);
return 0;
}
+
+static int mpeg4_update_thread_context_for_user(AVCodecContext *dst,
+ const AVCodecContext *src)
+{
+ MpegEncContext *m = dst->priv_data;
+ const MpegEncContext *m1 = src->priv_data;
+
+ m->quarter_sample = m1->quarter_sample;
+ m->divx_packed = m1->divx_packed;
+
+ return 0;
+}
#endif
static av_cold void mpeg4_init_static(void)
return 0;
}
+#define OFFSET(x) offsetof(MpegEncContext, x)
+#define FLAGS AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY
static const AVOption mpeg4_options[] = {
- {"quarter_sample", "1/4 subpel MC", offsetof(MpegEncContext, quarter_sample), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0},
- {"divx_packed", "divx style packed b frames", offsetof(MpegEncContext, divx_packed), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0},
+ {"quarter_sample", "1/4 subpel MC", OFFSET(quarter_sample), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
+ {"divx_packed", "divx style packed b frames", OFFSET(divx_packed), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
{NULL}
};
.version = LIBAVUTIL_VERSION_INT,
};
-AVCodec ff_mpeg4_decoder = {
+const AVCodec ff_mpeg4_decoder = {
.name = "mpeg4",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
.type = AVMEDIA_TYPE_VIDEO,
AV_CODEC_CAP_TRUNCATED | AV_CODEC_CAP_DELAY |
AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM |
- FF_CODEC_CAP_ALLOCATE_PROGRESS |
- FF_CODEC_CAP_INIT_CLEANUP,
+ FF_CODEC_CAP_ALLOCATE_PROGRESS,
.flush = ff_mpeg_flush,
.max_lowres = 3,
.pix_fmts = ff_h263_hwaccel_pixfmt_list_420,
.profiles = NULL_IF_CONFIG_SMALL(ff_mpeg4_video_profiles),
.update_thread_context = ONLY_IF_THREADS_ENABLED(mpeg4_update_thread_context),
+ .update_thread_context_for_user = ONLY_IF_THREADS_ENABLED(mpeg4_update_thread_context_for_user),
.priv_class = &mpeg4_class,
.hw_configs = (const AVCodecHWConfigInternal *const []) {
#if CONFIG_MPEG4_NVDEC_HWACCEL
projects / ffmpeg / blobdiff