* H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "internal.h"
#include "avcodec.h"
#include "h264.h"
-#include "h264data.h" //FIXME FIXME FIXME (just for zigzag_scan)
+#include "h264data.h"
#include "golomb.h"
#define MAX_LOG2_MAX_FRAME_NUM (12 + 4)
#define MIN_LOG2_MAX_FRAME_NUM 4
-static const AVRational pixel_aspect[17] = {
- { 0, 1 },
- { 1, 1 },
- { 12, 11 },
- { 10, 11 },
- { 16, 11 },
- { 40, 33 },
- { 24, 11 },
- { 20, 11 },
- { 32, 11 },
- { 80, 33 },
- { 18, 11 },
- { 15, 11 },
- { 64, 33 },
- { 160, 99 },
- { 4, 3 },
- { 3, 2 },
- { 2, 1 },
-};
-
#define QP(qP, depth) ((qP) + 6 * ((depth) - 8))
#define CHROMA_QP_TABLE_END(d) \
QP(37, d), QP(37, d), QP(37, d), QP(38, d), QP(38, d), QP(38, d), \
QP(39, d), QP(39, d), QP(39, d), QP(39, d)
-const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1] = {
+const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1] = {
{ CHROMA_QP_TABLE_END(8) },
{ 0, 1, 2, 3, 4, 5,
CHROMA_QP_TABLE_END(9) },
- { 0, 1, 2, 3, 4, 5,
+ { 0, 1, 2, 3, 4, 5,
6, 7, 8, 9, 10, 11,
CHROMA_QP_TABLE_END(10) },
+ { 0, 1, 2, 3, 4, 5,
+ 6, 7, 8, 9, 10, 11,
+ 12,13,14,15, 16, 17,
+ CHROMA_QP_TABLE_END(11) },
+ { 0, 1, 2, 3, 4, 5,
+ 6, 7, 8, 9, 10, 11,
+ 12,13,14,15, 16, 17,
+ 18,19,20,21, 22, 23,
+ CHROMA_QP_TABLE_END(12) },
+ { 0, 1, 2, 3, 4, 5,
+ 6, 7, 8, 9, 10, 11,
+ 12,13,14,15, 16, 17,
+ 18,19,20,21, 22, 23,
+ 24,25,26,27, 28, 29,
+ CHROMA_QP_TABLE_END(13) },
+ { 0, 1, 2, 3, 4, 5,
+ 6, 7, 8, 9, 10, 11,
+ 12,13,14,15, 16, 17,
+ 18,19,20,21, 22, 23,
+ 24,25,26,27, 28, 29,
+ 30,31,32,33, 34, 35,
+ CHROMA_QP_TABLE_END(14) },
};
static const uint8_t default_scaling4[2][16] = {
if (aspect_ratio_idc == EXTENDED_SAR) {
sps->sar.num = get_bits(&h->gb, 16);
sps->sar.den = get_bits(&h->gb, 16);
- } else if (aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)) {
- sps->sar = pixel_aspect[aspect_ratio_idc];
+ } else if (aspect_ratio_idc < FF_ARRAY_ELEMS(ff_h264_pixel_aspect)) {
+ sps->sar = ff_h264_pixel_aspect[aspect_ratio_idc];
} else {
av_log(h->avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
return AVERROR_INVALIDDATA;
get_ue_golomb(&h->gb); /* chroma_sample_location_type_bottom_field */
}
+ if (show_bits1(&h->gb) && get_bits_left(&h->gb) < 10) {
+ av_log(h->avctx, AV_LOG_WARNING, "Truncated VUI\n");
+ return 0;
+ }
+
sps->timing_info_present_flag = get_bits1(&h->gb);
if (sps->timing_info_present_flag) {
- sps->num_units_in_tick = get_bits_long(&h->gb, 32);
- sps->time_scale = get_bits_long(&h->gb, 32);
- if (!sps->num_units_in_tick || !sps->time_scale) {
+ unsigned num_units_in_tick = get_bits_long(&h->gb, 32);
+ unsigned time_scale = get_bits_long(&h->gb, 32);
+ if (!num_units_in_tick || !time_scale) {
av_log(h->avctx, AV_LOG_ERROR,
- "time_scale/num_units_in_tick invalid or unsupported (%"PRIu32"/%"PRIu32")\n",
- sps->time_scale, sps->num_units_in_tick);
- return AVERROR_INVALIDDATA;
+ "time_scale/num_units_in_tick invalid or unsupported (%u/%u)\n",
+ time_scale, num_units_in_tick);
+ sps->timing_info_present_flag = 0;
+ } else {
+ sps->num_units_in_tick = num_units_in_tick;
+ sps->time_scale = time_scale;
}
sps->fixed_frame_rate_flag = get_bits1(&h->gb);
}
sps->vcl_hrd_parameters_present_flag)
get_bits1(&h->gb); /* low_delay_hrd_flag */
sps->pic_struct_present_flag = get_bits1(&h->gb);
-
+ if (!get_bits_left(&h->gb))
+ return 0;
sps->bitstream_restriction_flag = get_bits1(&h->gb);
if (sps->bitstream_restriction_flag) {
get_bits1(&h->gb); /* motion_vectors_over_pic_boundaries_flag */
return AVERROR_INVALIDDATA;
}
}
- if (get_bits_left(&h->gb) < 0) {
- av_log(h->avctx, AV_LOG_ERROR,
- "Overread VUI by %d bits\n", -get_bits_left(&h->gb));
- return AVERROR_INVALIDDATA;
- }
return 0;
}
decode_scaling_list(h, scaling_matrix4[5], 16, default_scaling4[1], scaling_matrix4[4]); // Inter, Cb
if (is_sps || pps->transform_8x8_mode) {
decode_scaling_list(h, scaling_matrix8[0], 64, default_scaling8[0], fallback[2]); // Intra, Y
- if (sps->chroma_format_idc == 3) {
- decode_scaling_list(h, scaling_matrix8[1], 64, default_scaling8[0], scaling_matrix8[0]); // Intra, Cr
- decode_scaling_list(h, scaling_matrix8[2], 64, default_scaling8[0], scaling_matrix8[1]); // Intra, Cb
- }
decode_scaling_list(h, scaling_matrix8[3], 64, default_scaling8[1], fallback[3]); // Inter, Y
if (sps->chroma_format_idc == 3) {
+ decode_scaling_list(h, scaling_matrix8[1], 64, default_scaling8[0], scaling_matrix8[0]); // Intra, Cr
decode_scaling_list(h, scaling_matrix8[4], 64, default_scaling8[1], scaling_matrix8[3]); // Inter, Cr
+ decode_scaling_list(h, scaling_matrix8[2], 64, default_scaling8[0], scaling_matrix8[1]); // Intra, Cb
decode_scaling_list(h, scaling_matrix8[5], 64, default_scaling8[1], scaling_matrix8[4]); // Inter, Cb
}
}
}
}
-int ff_h264_decode_seq_parameter_set(H264Context *h)
+int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
{
int profile_idc, level_idc, constraint_set_flags = 0;
unsigned int sps_id;
int i, log2_max_frame_num_minus4;
SPS *sps;
+ sps = av_mallocz(sizeof(SPS));
+ if (!sps)
+ return AVERROR(ENOMEM);
+
+ sps->data_size = h->gb.buffer_end - h->gb.buffer;
+ if (sps->data_size > sizeof(sps->data)) {
+ av_log(h->avctx, AV_LOG_WARNING, "Truncating likely oversized SPS\n");
+ sps->data_size = sizeof(sps->data);
+ }
+ memcpy(sps->data, h->gb.buffer, sps->data_size);
+
profile_idc = get_bits(&h->gb, 8);
constraint_set_flags |= get_bits1(&h->gb) << 0; // constraint_set0_flag
constraint_set_flags |= get_bits1(&h->gb) << 1; // constraint_set1_flag
if (sps_id >= MAX_SPS_COUNT) {
av_log(h->avctx, AV_LOG_ERROR, "sps_id %u out of range\n", sps_id);
- return AVERROR_INVALIDDATA;
+ goto fail;
}
- sps = av_mallocz(sizeof(SPS));
- if (!sps)
- return AVERROR(ENOMEM);
sps->sps_id = sps_id;
sps->time_offset_length = 24;
sps->profile_idc = profile_idc;
sps->constraint_set_flags = constraint_set_flags;
sps->level_idc = level_idc;
+ sps->full_range = -1;
memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
sps->scaling_matrix_present = 0;
+ sps->colorspace = 2; //AVCOL_SPC_UNSPECIFIED
if (sps->profile_idc == 100 || // High profile
sps->profile_idc == 110 || // High10 profile
sps->profile_idc == 138 || // Multiview Depth High profile (MVCD)
sps->profile_idc == 144) { // old High444 profile
sps->chroma_format_idc = get_ue_golomb_31(&h->gb);
- if (sps->chroma_format_idc > 3) {
+ if (sps->chroma_format_idc > 3U) {
avpriv_request_sample(h->avctx, "chroma_format_idc %u",
sps->chroma_format_idc);
goto fail;
} else if (sps->chroma_format_idc == 3) {
sps->residual_color_transform_flag = get_bits1(&h->gb);
+ if (sps->residual_color_transform_flag) {
+ av_log(h->avctx, AV_LOG_ERROR, "separate color planes are not supported\n");
+ goto fail;
+ }
}
sps->bit_depth_luma = get_ue_golomb(&h->gb) + 8;
sps->bit_depth_chroma = get_ue_golomb(&h->gb) + 8;
"Different chroma and luma bit depth");
goto fail;
}
+ if (sps->bit_depth_luma < 8 || sps->bit_depth_luma > 14 ||
+ sps->bit_depth_chroma < 8 || sps->bit_depth_chroma > 14) {
+ av_log(h->avctx, AV_LOG_ERROR, "illegal bit depth value (%d, %d)\n",
+ sps->bit_depth_luma, sps->bit_depth_chroma);
+ goto fail;
+ }
sps->transform_bypass = get_bits1(&h->gb);
decode_scaling_matrices(h, sps, NULL, 1,
sps->scaling_matrix4, sps->scaling_matrix8);
sps->poc_type = get_ue_golomb_31(&h->gb);
if (sps->poc_type == 0) { // FIXME #define
- sps->log2_max_poc_lsb = get_ue_golomb(&h->gb) + 4;
+ unsigned t = get_ue_golomb(&h->gb);
+ if (t>12) {
+ av_log(h->avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t);
+ goto fail;
+ }
+ sps->log2_max_poc_lsb = t + 4;
} else if (sps->poc_type == 1) { // FIXME #define
sps->delta_pic_order_always_zero_flag = get_bits1(&h->gb);
sps->offset_for_non_ref_pic = get_se_golomb(&h->gb);
}
sps->ref_frame_count = get_ue_golomb_31(&h->gb);
+ if (h->avctx->codec_tag == MKTAG('S', 'M', 'V', '2'))
+ sps->ref_frame_count = FFMAX(2, sps->ref_frame_count);
if (sps->ref_frame_count > H264_MAX_PICTURE_COUNT - 2 ||
- sps->ref_frame_count >= 32U) {
+ sps->ref_frame_count > 16U) {
av_log(h->avctx, AV_LOG_ERROR,
"too many reference frames %d\n", sps->ref_frame_count);
goto fail;
sps->mb_aff = 0;
sps->direct_8x8_inference_flag = get_bits1(&h->gb);
- if (!sps->frame_mbs_only_flag && !sps->direct_8x8_inference_flag) {
- av_log(h->avctx, AV_LOG_ERROR,
- "This stream was generated by a broken encoder, invalid 8x8 inference\n");
- goto fail;
- }
#ifndef ALLOW_INTERLACE
if (sps->mb_aff)
unsigned int crop_right = get_ue_golomb(&h->gb);
unsigned int crop_top = get_ue_golomb(&h->gb);
unsigned int crop_bottom = get_ue_golomb(&h->gb);
+ int width = 16 * sps->mb_width;
+ int height = 16 * sps->mb_height * (2 - sps->frame_mbs_only_flag);
if (h->avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
av_log(h->avctx, AV_LOG_DEBUG, "discarding sps cropping, original "
crop_left);
}
- if (INT_MAX / step_x <= crop_left ||
- INT_MAX / step_x - crop_left <= crop_right ||
- 16 * sps->mb_width <= step_x * (crop_left + crop_right) ||
- INT_MAX / step_y <= crop_top ||
- INT_MAX / step_y - crop_top <= crop_bottom ||
- 16 * sps->mb_height <= step_y * (crop_top + crop_bottom)) {
- av_log(h->avctx, AV_LOG_WARNING, "Invalid crop parameters\n");
- if (h->avctx->err_recognition & AV_EF_EXPLODE)
- goto fail;
- crop_left = crop_right = crop_top = crop_bottom = 0;
+ if (crop_left > (unsigned)INT_MAX / 4 / step_x ||
+ crop_right > (unsigned)INT_MAX / 4 / step_x ||
+ crop_top > (unsigned)INT_MAX / 4 / step_y ||
+ crop_bottom> (unsigned)INT_MAX / 4 / step_y ||
+ (crop_left + crop_right ) * step_x >= width ||
+ (crop_top + crop_bottom) * step_y >= height
+ ) {
+ av_log(h->avctx, AV_LOG_ERROR, "crop values invalid %d %d %d %d / %d %d\n", crop_left, crop_right, crop_top, crop_bottom, width, height);
+ goto fail;
}
sps->crop_left = crop_left * step_x;
sps->vui_parameters_present_flag = get_bits1(&h->gb);
if (sps->vui_parameters_present_flag) {
int ret = decode_vui_parameters(h, sps);
- if (ret < 0 && h->avctx->err_recognition & AV_EF_EXPLODE)
+ if (ret < 0)
+ goto fail;
+ }
+
+ if (get_bits_left(&h->gb) < 0) {
+ av_log(h->avctx, ignore_truncation ? AV_LOG_WARNING : AV_LOG_ERROR,
+ "Overread %s by %d bits\n", sps->vui_parameters_present_flag ? "VUI" : "SPS", -get_bits_left(&h->gb));
+ if (!ignore_truncation)
goto fail;
}
if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
static const char csp[4][5] = { "Gray", "420", "422", "444" };
av_log(h->avctx, AV_LOG_DEBUG,
- "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%u/%u/%u/%u %s %s %"PRId32"/%"PRId32"\n",
+ "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%u/%u/%u/%u %s %s %"PRId32"/%"PRId32" b%d reo:%d\n",
sps_id, sps->profile_idc, sps->level_idc,
sps->poc_type,
sps->ref_frame_count,
sps->vui_parameters_present_flag ? "VUI" : "",
csp[sps->chroma_format_idc],
sps->timing_info_present_flag ? sps->num_units_in_tick : 0,
- sps->timing_info_present_flag ? sps->time_scale : 0);
+ sps->timing_info_present_flag ? sps->time_scale : 0,
+ sps->bit_depth_luma,
+ sps->bitstream_restriction_flag ? sps->num_reorder_frames : -1
+ );
}
sps->new = 1;
av_free(h->sps_buffers[sps_id]);
h->sps_buffers[sps_id] = sps;
- h->sps = *sps;
return 0;
ff_h264_chroma_qp[depth - 8][av_clip(i + index, 0, max_qp)];
}
+static int more_rbsp_data_in_pps(H264Context *h, PPS *pps)
+{
+ const SPS *sps = h->sps_buffers[pps->sps_id];
+ int profile_idc = sps->profile_idc;
+
+ if ((profile_idc == 66 || profile_idc == 77 ||
+ profile_idc == 88) && (sps->constraint_set_flags & 7)) {
+ av_log(h->avctx, AV_LOG_VERBOSE,
+ "Current profile doesn't provide more RBSP data in PPS, skipping\n");
+ return 0;
+ }
+
+ return 1;
+}
+
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
{
const SPS *sps;
pps = av_mallocz(sizeof(PPS));
if (!pps)
return AVERROR(ENOMEM);
+ pps->data_size = h->gb.buffer_end - h->gb.buffer;
+ if (pps->data_size > sizeof(pps->data)) {
+ av_log(h->avctx, AV_LOG_WARNING, "Truncating likely oversized PPS\n");
+ pps->data_size = sizeof(pps->data);
+ }
+ memcpy(pps->data, h->gb.buffer, pps->data_size);
pps->sps_id = get_ue_golomb_31(&h->gb);
if ((unsigned)pps->sps_id >= MAX_SPS_COUNT ||
!h->sps_buffers[pps->sps_id]) {
goto fail;
}
sps = h->sps_buffers[pps->sps_id];
-
- if (sps->bit_depth_luma > 10) {
+ if (sps->bit_depth_luma > 14) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "Invalid luma bit depth=%d\n",
+ sps->bit_depth_luma);
+ ret = AVERROR_INVALIDDATA;
+ goto fail;
+ } else if (sps->bit_depth_luma == 11 || sps->bit_depth_luma == 13) {
av_log(h->avctx, AV_LOG_ERROR,
- "Unimplemented luma bit depth=%d (max=10)\n",
+ "Unimplemented luma bit depth=%d\n",
sps->bit_depth_luma);
ret = AVERROR_PATCHWELCOME;
goto fail;
sizeof(pps->scaling_matrix8));
bits_left = bit_length - get_bits_count(&h->gb);
- if (bits_left && (bits_left > 8 ||
- show_bits(&h->gb, bits_left) != 1 << (bits_left - 1))) {
+ if (bits_left > 0 && more_rbsp_data_in_pps(h, pps)) {
pps->transform_8x8_mode = get_bits1(&h->gb);
decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0,
pps->scaling_matrix4, pps->scaling_matrix8);
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