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author | Baptiste Coudurier <baptiste.coudurier@gmail.com> | 2011-05-05 14:18:33 +0200 |
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committer | Diego Biurrun <diego@biurrun.de> | 2011-06-03 13:55:54 +0200 |
commit | 8dfc6d1f7c33a482aba23e75870076f79b0ea485 (patch) | |
tree | aec288d7bb6ce4d6836d2b40d96256b42f887e07 /libavcodec | |
parent | 1f94c31f69e6eb7eee80d0a3b42875261a18dcbe (diff) | |
download | ffmpeg-streaming-8dfc6d1f7c33a482aba23e75870076f79b0ea485.zip ffmpeg-streaming-8dfc6d1f7c33a482aba23e75870076f79b0ea485.tar.gz |
svq3: Move svq3-specific fields to their own context.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec')
-rw-r--r-- | libavcodec/h264.h | 7 | ||||
-rw-r--r-- | libavcodec/svq3.c | 97 |
2 files changed, 62 insertions, 42 deletions
diff --git a/libavcodec/h264.h b/libavcodec/h264.h index 5c275e2..8c4f1ab 100644 --- a/libavcodec/h264.h +++ b/libavcodec/h264.h @@ -594,13 +594,6 @@ typedef struct H264Context{ // Timestamp stuff int sei_buffering_period_present; ///< Buffering period SEI flag int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs - - //SVQ3 specific fields - int halfpel_flag; - int thirdpel_flag; - int unknown_svq3_flag; - int next_slice_index; - uint32_t svq3_watermark_key; }H264Context; diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c index bc0215e..b55fa52 100644 --- a/libavcodec/svq3.c +++ b/libavcodec/svq3.c @@ -63,6 +63,15 @@ * svq3 decoder. */ +typedef struct { + H264Context h; + int halfpel_flag; + int thirdpel_flag; + int unknown_flag; + int next_slice_index; + uint32_t watermark_key; +} SVQ3Context; + #define FULLPEL_MODE 1 #define HALFPEL_MODE 2 #define THIRDPEL_MODE 3 @@ -423,8 +432,9 @@ static inline int svq3_mc_dir(H264Context *h, int size, int mode, int dir, return 0; } -static int svq3_decode_mb(H264Context *h, unsigned int mb_type) +static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type) { + H264Context *h = &svq3->h; int i, j, k, m, dir, mode; int cbp = 0; uint32_t vlc; @@ -456,9 +466,9 @@ static int svq3_decode_mb(H264Context *h, unsigned int mb_type) mb_type = MB_TYPE_16x16; } } else if (mb_type < 8) { /* INTER */ - if (h->thirdpel_flag && h->halfpel_flag == !get_bits1 (&s->gb)) { + if (svq3->thirdpel_flag && svq3->halfpel_flag == !get_bits1 (&s->gb)) { mode = THIRDPEL_MODE; - } else if (h->halfpel_flag && h->thirdpel_flag == !get_bits1 (&s->gb)) { + } else if (svq3->halfpel_flag && svq3->thirdpel_flag == !get_bits1 (&s->gb)) { mode = HALFPEL_MODE; } else { mode = FULLPEL_MODE; @@ -701,9 +711,11 @@ static int svq3_decode_mb(H264Context *h, unsigned int mb_type) return 0; } -static int svq3_decode_slice_header(H264Context *h) +static int svq3_decode_slice_header(AVCodecContext *avctx) { - MpegEncContext *const s = (MpegEncContext *) h; + SVQ3Context *svq3 = avctx->priv_data; + H264Context *h = &svq3->h; + MpegEncContext *s = &h->s; const int mb_xy = h->mb_xy; int i, header; @@ -711,24 +723,24 @@ static int svq3_decode_slice_header(H264Context *h) if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) { /* TODO: what? */ - av_log(h->s.avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); + av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); return -1; } else { int length = (header >> 5) & 3; - h->next_slice_index = get_bits_count(&s->gb) + 8*show_bits(&s->gb, 8*length) + 8*length; + svq3->next_slice_index = get_bits_count(&s->gb) + 8*show_bits(&s->gb, 8*length) + 8*length; - if (h->next_slice_index > s->gb.size_in_bits) { - av_log(h->s.avctx, AV_LOG_ERROR, "slice after bitstream end\n"); + if (svq3->next_slice_index > s->gb.size_in_bits) { + av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n"); return -1; } - s->gb.size_in_bits = h->next_slice_index - 8*(length - 1); + s->gb.size_in_bits = svq3->next_slice_index - 8*(length - 1); skip_bits(&s->gb, 8); - if (h->svq3_watermark_key) { + if (svq3->watermark_key) { uint32_t header = AV_RL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1]); - AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1], header ^ h->svq3_watermark_key); + AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1], header ^ svq3->watermark_key); } if (length > 0) { memcpy((uint8_t *) &s->gb.buffer[get_bits_count(&s->gb) >> 3], @@ -759,7 +771,7 @@ static int svq3_decode_slice_header(H264Context *h) /* unknown fields */ skip_bits1(&s->gb); - if (h->unknown_svq3_flag) { + if (svq3->unknown_flag) { skip_bits1(&s->gb); } @@ -788,8 +800,9 @@ static int svq3_decode_slice_header(H264Context *h) static av_cold int svq3_decode_init(AVCodecContext *avctx) { - MpegEncContext *const s = avctx->priv_data; - H264Context *const h = avctx->priv_data; + SVQ3Context *svq3 = avctx->priv_data; + H264Context *h = &svq3->h; + MpegEncContext *s = &h->s; int m; unsigned char *extradata; unsigned int size; @@ -804,10 +817,11 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) avctx->pix_fmt = avctx->codec->pix_fmts[0]; if (!s->context_initialized) { - h->halfpel_flag = 1; - h->thirdpel_flag = 1; - h->unknown_svq3_flag = 0; - h->chroma_qp[0] = h->chroma_qp[1] = 4; + h->chroma_qp[0] = h->chroma_qp[1] = 4; + + svq3->halfpel_flag = 1; + svq3->thirdpel_flag = 1; + svq3->unknown_flag = 0; /* prowl for the "SEQH" marker in the extradata */ extradata = (unsigned char *)avctx->extradata; @@ -842,8 +856,8 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) break; } - h->halfpel_flag = get_bits1(&gb); - h->thirdpel_flag = get_bits1(&gb); + svq3->halfpel_flag = get_bits1(&gb); + svq3->thirdpel_flag = get_bits1(&gb); /* unknown fields */ skip_bits1(&gb); @@ -860,9 +874,9 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) skip_bits(&gb, 8); } - h->unknown_svq3_flag = get_bits1(&gb); + svq3->unknown_flag = get_bits1(&gb); avctx->has_b_frames = !s->low_delay; - if (h->unknown_svq3_flag) { + if (svq3->unknown_flag) { #if CONFIG_ZLIB unsigned watermark_width = svq3_get_ue_golomb(&gb); unsigned watermark_height = svq3_get_ue_golomb(&gb); @@ -885,9 +899,9 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx) av_free(buf); return -1; } - h->svq3_watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); - h->svq3_watermark_key = h->svq3_watermark_key << 16 | h->svq3_watermark_key; - av_log(avctx, AV_LOG_DEBUG, "watermark key %#x\n", h->svq3_watermark_key); + svq3->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); + svq3->watermark_key = svq3->watermark_key << 16 | svq3->watermark_key; + av_log(avctx, AV_LOG_DEBUG, "watermark key %#x\n", svq3->watermark_key); av_free(buf); #else av_log(avctx, AV_LOG_ERROR, "this svq3 file contains watermark which need zlib support compiled in\n"); @@ -915,9 +929,10 @@ static int svq3_decode_frame(AVCodecContext *avctx, AVPacket *avpkt) { const uint8_t *buf = avpkt->data; + SVQ3Context *svq3 = avctx->priv_data; + H264Context *h = &svq3->h; + MpegEncContext *s = &h->s; int buf_size = avpkt->size; - MpegEncContext *const s = avctx->priv_data; - H264Context *const h = avctx->priv_data; int m, mb_type; /* special case for last picture */ @@ -934,7 +949,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, s->mb_x = s->mb_y = h->mb_xy = 0; - if (svq3_decode_slice_header(h)) + if (svq3_decode_slice_header(avctx)) return -1; s->pict_type = h->slice_type; @@ -942,7 +957,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, if (avctx->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n", - av_get_picture_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag, + av_get_picture_type_char(s->pict_type), svq3->halfpel_flag, svq3->thirdpel_flag, s->adaptive_quant, s->qscale, h->slice_num); } @@ -1006,10 +1021,10 @@ static int svq3_decode_frame(AVCodecContext *avctx, if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits && ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) { - skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb)); + skip_bits(&s->gb, svq3->next_slice_index - get_bits_count(&s->gb)); s->gb.size_in_bits = 8*buf_size; - if (svq3_decode_slice_header(h)) + if (svq3_decode_slice_header(avctx)) return -1; /* TODO: support s->mb_skip_run */ @@ -1022,7 +1037,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, } else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) { mb_type += 4; } - if (mb_type > 33 || svq3_decode_mb(h, mb_type)) { + if (mb_type > 33 || svq3_decode_mb(svq3, mb_type)) { av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); return -1; } @@ -1056,15 +1071,27 @@ static int svq3_decode_frame(AVCodecContext *avctx, return buf_size; } +static int svq3_decode_end(AVCodecContext *avctx) +{ + SVQ3Context *svq3 = avctx->priv_data; + H264Context *h = &svq3->h; + MpegEncContext *s = &h->s; + + ff_h264_free_context(h); + + MPV_common_end(s); + + return 0; +} AVCodec ff_svq3_decoder = { "svq3", AVMEDIA_TYPE_VIDEO, CODEC_ID_SVQ3, - sizeof(H264Context), + sizeof(SVQ3Context), svq3_decode_init, NULL, - ff_h264_decode_end, + svq3_decode_end, svq3_decode_frame, CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_DELAY, .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"), |